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Introduction: Financial toxicity has negative implications for patient well-being and health outcomes. There is a gap in understanding financial toxicity for patients undergoing palliative radiotherapy (RT). Methods: A review of patients treated with palliative RT was conducted from January 2021 to December 2022. The FACIT-COST (COST) was measured (higher scores implying better financial well-being). Financial toxicity was graded according to previously suggested cutoffs: Grade 0 (score ≥26), Grade 1 (14-25), Grade 2 (1-13), and Grade 3 (0). FACIT-TS-G was used for treatment satisfaction, and EORTC QLQ-C30 was assessed for global health status and functional scales. Results: 53 patients were identified. Median COST was 25 (range 0-44), 49% had Grade 0 financial toxicity, 32% Grade 1, 15% Grade 2, and 4% Grade 3. Overall, cancer caused financial hardship among 45%. Higher COST was weakly associated with higher global health status/Quality of Life (QoL), physical functioning, role functioning, and cognitive functioning; moderately associated with higher social functioning; and strongly associated with improved emotional functioning. Higher income or Medicare or private coverage (rather than Medicaid) was associated with less financial toxicity, whereas an underrepresented minority background or a non-English language preference was associated with greater financial toxicity. A multivariate model found that higher area income (HR .80, P = .007) and higher cognitive functioning (HR .96, P = .01) were significantly associated with financial toxicity. Conclusions: Financial toxicity was seen in approximately half of patients receiving palliative RT. The highest risk groups were those with lower income and lower cognitive functioning. This study supports the measurement of financial toxicity by clinicians.

Suffering at the end-of-life (EOL) can impact the perception of a "good death" and ultimately affect bereavement for families of children with cancer. Palliative radiation (pXRT) is a tool that can address pain, mitigate suffering and improve quality of life. A retrospective medical record review of pediatric oncology patients who died over an 11-year period was completed. Descriptive analysis and nonparametric tests to compare groups were used. 2202 total deaths occurred during the study period; 167 patients met study criteria, reflecting a 7.6% incidence of pXRT use at the EOL. Most patients were white (68%) and male (59%), with a median age of 9 years. Solid tumors were most common (52%), followed by CNS tumors (38%), and leukemia (10%). pXRT was primarily used to treat pain (37%) and focused on sites including brain/spine (37%), head/neck (24%), and pelvis (12%). Mean radiation dose delivered was 23.8Gy (range: 1.8–55.8 Gy) in a median of 7 fractions (range: 1–31). Side effects were rare and 58% of patients had a decrease in reported pain scores. Additionally, 87% received a pediatric palliative care (PPC) consultation which increased the likelihood for hospice referral, documented DNR preferences and decrease episodes of CPR on the day of death. There is underutilization and significant variability in the use of pXRT during EOL in pediatric oncology. Barriers to this tool may include physician perceptions, family/patient preferences, and logistical hardships. Guidelines to standardize pXRT, alongside earlier PPC integration, may guide clinician decision making and increase pXRT utilization. [ABSTRACT FROM AUTHOR]

Purpose: Palliative radiotherapy (RT) plays a crucial role in alleviating symptoms associated with metastatic sarcoma. However, there is a lack of consensus on the optimal palliative radiation dose and fractionation for metastatic sarcomas. We analyzed the association between biologically effective radiation dose and symptom response for patients who underwent palliative RT for metastatic sarcomas Methods and materials: We retrospectively identified patients with metastatic sarcoma treated with palliative RT between 1999 and 2021 at our institution. We assessed the association between equivalent dose in 2 Gy fractions (EQD2) with an α/β of three and symptom relief or overall survival (OS) using univariable and multivariable analyses. Results: Of the 198 metastatic sites treated, the most common indications for palliative radiation were pain (n = 181, 91 %) and compression of adjacent structures (n = 16, 8 %). In our analysis, an EQD2 of > 20 Gy was associated with greater rates of short-term symptom relief (n = 143, 85 %) at the RT site compared to an EQD2 of ≤ 20 Gy (n = 14, 54 %, P = 0.001) with no reports of grade 3 or higher toxicity. However, there was no significant improvement in short-term symptom relief for higher radiation doses. Patients treated with an EQD2 of ≤ 20 Gy had a significantly worse performance status, but there was no significant difference in overall survival based on EQD2 on multivariable analysis. Conclusions: An EQD2 ≤ 20 Gy (e.g., 8 Gy in 1 fraction) provided inadequate palliative benefit in this series. An EQD2 > 20 Gy resulted in greater rates of symptom palliation in metastatic sarcomas, but further dose escalation did not improve symptom response or durability. These findings suggest standard palliative regimens such as 20 Gy in 5 fractions (EQD2 of 28 Gy) are effective for patients with metastatic sarcomas.

Purpose of review Thirty-day mortality (30DM) is an emerging consideration for determining whether terminally ill adult patients may benefit from palliative radiotherapy (RT). However, the efficacy and ethics of delivering palliative RT at the end of life (EOL) in children are seldom discussed and not well-established. Recent findings Palliative RT is perhaps underutilized among patients =21 years old with rates as low as 11%. While effective when delivered early, clinical benefit decreases when administered within the last 30 days of life. Pediatric 30DM rates vary widely between institutions (0.7-30%), highlighting the need for standardized practices. Accurate prognosis estimation remains challenging and prognostic models specific to palliative pediatric patients are limited. Discordance between provider and patient/parent perceptions of prognosis further complicates decision-making. Summary RT offers effective symptom control in pediatric patients when administered early. However, delivering RT within the last 30 days of life may provide limited clinical benefit and hinder optimal EOL planning and care. Early referral for palliative RT, preferably with fewer fractions (five or fewer), along with multidisciplinary supportive care, optimizes the likelihood of maintaining patients' quality of life. Prognosis estimation remains difficult, and improving patient and family understanding is crucial. Further research is needed to refine prognostic models and enhance patient-centered care. [ABSTRACT FROM AUTHOR]

Introduction: Palliative interventions (PI) are offered to patients with pancreatic cancer with the aim of enhancing quality of life and improving overall survival (OS). The purpose of this study was to determine the impact of PI on survival amongst patients with unresected pancreatic cancer. Methods: Patients with stage I-IV unresected pancreatic adenocarcinoma were identified using the 2010-2016 National Cancer Database. The cohort was stratified by PI received: palliative surgery (PS), radiation therapy (RT), chemotherapy (CT), pain management (PM), or a combination (COM) of the preceding. Kaplan-Meier method with log-rank test was used to compare and estimate OS based on the PI received. A multivariate proportional hazards model was utilized to identify predictors of survival. Results: 25,995 patients were identified, of which 24.3% received PS, 7.7% RT, 40.8% CT, 16.6% PM, and 10.6% COM. The median OS was 4.9 months, with stage III patients having the highest and stage IV the lowest OS (7.8 vs 4.0 months). Across all stages, PM yielded the lowest median OS and CT the highest (P <.001). Despite this, the stage IV cohort was the only group in which CT (81%) accounted for the largest proportion of PI received (P <.001). Although all PI were identified as positive predictors of survival on multivariate analysis, CT had the strongest association (HR.43; 95% CI,.55-.60, P =.001). Conclusion: PI offers a survival advantage to patients with pancreatic adenocarcinoma. Further studies to examine the observed limited use of CT in earlier disease stages are warranted. [ABSTRACT FROM AUTHOR]

Abstract Hepatocellular carcinoma (HCC) is a common cancer and is frequently diagnosed at a late and unresectable stage with limited effective treatment options. Here, we present the fifth reported case of a 77 year‐old male with metastatic HCC presenting as a symptomatic superior sulcus lung tumor and discuss the genomic profile of this rare presentation of HCC for the first time, which included multiple classic mutations in HCC such as TERT, TP53, and WNT/β‐catenin signaling as well as in the DNA repair gene ATM. The patient was treated with palliative radiotherapy to the Pancoast tumor followed by atezolizumab plus bevacizumab and passed away 6 months after diagnosis. This rare case highlights the need for effective treatment in aggressive and unresectable HCC and the utility of early genomic studies to allow for targeted therapy such as poly (ADP‐ribose) polymerase (PARP)‐inhibitors.

Hepatocellular carcinoma (HCC) is a common cancer and is frequently diagnosed at a late and unresectable stage with limited effective treatment options. Here, we present the fifth reported case of a 77 year‐old male with metastatic HCC presenting as a symptomatic superior sulcus lung tumor and discuss the genomic profile of this rare presentation of HCC for the first time, which included multiple classic mutations in HCC such as TERT, TP53, and WNT/β‐catenin signaling as well as in the DNA repair gene ATM. The patient was treated with palliative radiotherapy to the Pancoast tumor followed by atezolizumab plus bevacizumab and passed away 6 months after diagnosis. This rare case highlights the need for effective treatment in aggressive and unresectable HCC and the utility of early genomic studies to allow for targeted therapy such as poly (ADP‐ribose) polymerase (PARP)‐inhibitors. [ABSTRACT FROM AUTHOR]

Abstract The abscopal effect without concomitant immunotherapy is a rare event, including among cases of lung cancer. Furthermore, the occurrence of limited abscopal effect for only a single lesion in the metastatic organ consistent with the irradiated organ would be an even more rare event. A 94‐year‐old man was diagnosed with advanced lung cancer with osteolytic bone metastases in his right iliac bone, and the right side of his axial vertebrae. After palliative radiation therapy to the right iliac lesion for pain relief without other anticancer therapy, the axial vertebral osteolytic lesion disappeared despite no reduction in the other lesions. This case furthers our understanding of the pathogenesis of the abscopal effect.

Radiation myelopathy is a rare, late-stage adverse event that develops following irradiation at or above 50 Gy. Here, we report a case of irreversible paraplegia caused by palliative radiation (20 Gy in 5 fractions) to the spinal cord combined with intrathecal methotrexate (IT-MTX). A 69-year-old man presented with back pain, prompting a diagnosis of acute myeloid leukemia. At the first visit, he complained of muscle weakness and hypoesthesia in both legs; spinal magnetic resonance imaging (MRI) revealed an epidural mass compressing the spinal cord at the fifth to seventh level of the thoracic vertebrae. This was considered to be an extramedullary lesion of leukemia, and he received remission induction therapy including IT-MTX; palliative radiation (20 Gy in 5 fractions) of the epidural mass was initiated the following day. Then, during the course of consolidation therapy, a second IT-MTX was performed after 1 month and a third after 3 months. While the consolidation therapy was complete, yielding remission, he developed sudden paraplegia, as well as bladder and bowel dysfunction (BBD), 10 months later. Spinal MRI showed extensive intramedullary high signal intensity on T2-weighted image, including the irradiation field. It was thought myelopathy was due to irradiation of the spinal cord combined with IT-MTX. He immediately received steroid pulse therapy; however, the paraplegia and BBD did not improve. It is extremely rare for irreversible radiation myelopathy to occur with IT-MTX and palliative radiation to the spinal cord. We believe that even with low-dose palliative radiation, caution is required for combined use with IT-MTX.

We conducted a prospective pilot study evaluating the feasibility of same day MRI-only simulation and treatment with MRI-guided adaptive palliative radiotherapy (MAP-RT) for urgent palliative indications (NCT#03824366). All (16/16) patients were able to complete 99% of their first on-table attempted fractions, and no grades 3–5 toxicities occurred.

Purpose: To describe a novel metric to aid clinical decision making between shorter versus longer palliative radiotherapy (PRT) regimens using objective patient factors. Materials and Methods: Patients receiving PRT at a single institution between 2014 and 2018 were reviewed. The time between PRT start and finish was calculated and divided by overall survival (in days from start of PRT) to generate the percent of remaining life (PRL). This value was compared across various clinical factors using the Kruskal–Wallis test. Factors identified with a significance level p < 0.01 were included in a novel Palliative Appropriateness Criteria Score (PACS) and were included in an online risk assessment tool to assist clinicians in patient-specific fractionation decisions. Results: Totally 1027 courses of PRT were analyzed. Median age was 64 years; Eastern Cooperative Oncology Group (ECOG) performance status was 3–4 in 22%. Primary malignancies included were lung (38%), breast (13.8%), prostate (9.3%), and other (39%). The indication for PRT was pain (61%), neurological (21%), or other (18%). Palliative regimens included 199 (19.4%) receiving single fraction, 176 (17.1%) receiving 2–5 fractions, and 652 (63.5%) receiving 10 fractions. Median follow-up was 83 days overall and 437 days for patients alive at last follow-up. Factors significantly associated with increased PRL (and included in the PACS) were male gender, ECOG 3–4, lung or "other" primary diagnosis (vs. breast or prostate), PRT indication (neurological dysfunction vs. pain/other), inpatient status, and extraosseous sites treatment. Death within 30 days was significantly associated with high-risk PACS categorization, regardless of fractionation scheme (p < 0.001). Conclusions: The PACS is a novel metric for evaluating the utility of PRT regimens to improve clinical decision making. Single fraction is associated with low PRL. When considering multifraction PRT regimens, the PACS identifies patients who may benefit from shorter courses of PRT and alternatively, low-risk patients for whom a more protracted course is reasonable. Prospective external validation is warranted. [ABSTRACT FROM AUTHOR]

Introduction: For patients with stage IV esophageal cancer, esophageal radiation may be used selectively for local control and palliation. We aimed to understand patterns of radiation administration among patients with stage IV esophageal cancer and any potential survival associations. Methods: In this retrospective cohort study, the National Cancer Database was queried for patients with metastatic stage IV esophageal cancer diagnosed between 2016 and 2019. Patterns of radiation use were identified. Survival was determined through Kaplan-Meier analysis of propensity score-matched pairs of patients who did and did not receive radiotherapy and time-to-event models. Results: Overall, 12,088 patients with stage IV esophageal cancer were identified, including 32.7% who received esophageal radiation. The median age was 65 (interquartile range [IQR]: 58–73) years, and 82.6% were male. Among the irradiated patients, the median total radiation dose was 35 (IQR: 30–50) Gy administered in a median of 14 (IQR: 10–25) fractions given in 22 (IQR: 14–39) days. Overall, esophageal radiation was not associated with better survival (log-rank p = 0.41). When stratified by radiation dose, a survival advantage (over no radiation) was found in the 1144 patients (29% of the irradiated patients) who received 45 to 59.9 Gy (time ratio = 1.28, 95% confidence interval: 1.20–1.37, p < 0.001) and the 88 patients (2.2%) who received 60 to 80 Gy (time ratio = 1.37, 95% confidence interval: 1.11–1.69, p = 0.003). Conclusions: One-third of the patients with metastatic stage IV esophageal cancer in the National Cancer Database received esophageal radiation. Most received a radiation dose that, although consistent with palliative regimens, was not associated with a survival advantage. Further study is warranted to understand the indications for radiation in stage IV esophageal cancer and potentially reevaluate the most appropriate radiation dose for palliation.

The abscopal effect without concomitant immunotherapy is a rare event, including among cases of lung cancer. Furthermore, the occurrence of limited abscopal effect for only a single lesion in the metastatic organ consistent with the irradiated organ would be an even more rare event. A 94‐year‐old man was diagnosed with advanced lung cancer with osteolytic bone metastases in his right iliac bone, and the right side of his axial vertebrae. After palliative radiation therapy to the right iliac lesion for pain relief without other anticancer therapy, the axial vertebral osteolytic lesion disappeared despite no reduction in the other lesions. This case furthers our understanding of the pathogenesis of the abscopal effect. [ABSTRACT FROM AUTHOR]

Radiation myelopathy is a rare, late-stage adverse event that develops following irradiation at or above 50 Gy. Here, we report a case of irreversible paraplegia caused by palliative radiation (20 Gy in 5 fractions) to the spinal cord combined with intrathecal methotrexate (IT-MTX). A 69-year-old man presented with back pain, prompting a diagnosis of acute myeloid leukemia. At the first visit, he complained of muscle weakness and hypoesthesia in both legs; spinal magnetic resonance imaging (MRI) revealed an epidural mass compressing the spinal cord at the fifth to seventh level of the thoracic vertebrae. This was considered to be an extramedullary lesion of leukemia, and he received remission induction therapy including IT-MTX; palliative radiation (20 Gy in 5 fractions) of the epidural mass was initiated the following day. Then, during the course of consolidation therapy, a second IT-MTX was performed after 1 month and a third after 3 months. While the consolidation therapy was complete, yielding remission, he developed sudden paraplegia, as well as bladder and bowel dysfunction (BBD), 10 months later. Spinal MRI showed extensive intramedullary high signal intensity on T2-weighted image, including the irradiation field. It was thought myelopathy was due to irradiation of the spinal cord combined with IT-MTX. He immediately received steroid pulse therapy; however, the paraplegia and BBD did not improve. It is extremely rare for irreversible radiation myelopathy to occur with IT-MTX and palliative radiation to the spinal cord. We believe that even with low-dose palliative radiation, caution is required for combined use with IT-MTX. [ABSTRACT FROM AUTHOR]

Abstract Purpose Metastatic epidural spinal cord compression (MESCC) is a devastating complication of advanced malignancy, which can result in neurologic complications and significant deterioration in overall function and quality of life. Most patients are not candidates for optimal surgical decompression and as a result, receive urgent 3D conformal radiotherapy (3DCRT) to prevent or attempt to reverse neurologic progression. Multiple trials indicate that response and ambulatory rates after 3DCRT are inferior to surgery. The advent of stereotactic body radiation therapy (SBRT) has created a method with which a “radiosurgical decompression” boost may facilitate improve outcomes for MESCC patients. Methods We are conducting a pilot study to investigate SBRT boost after urgent 3D CRT for patients with MESCC. The aim of the study is to establish feasibility of this two-phase treatment regimen, and secondarily to characterize post-treatment ambulation status, motor response, pain control, quality of life and survival. Discussion We describe the study protocol and present a case report of one patient. A quality assurance review was conducted after the first seven patients, and resultant dose-constraints were revised to improve safety and feasibility of planning through more conservative organ at risk constraints. There have been no severe adverse events (grade 3–5) to date. We have illustrated clinical and dosimetric data of an example case, where a patient regained full strength and ambulatory capacity. Conclusions Our study aims to determine if SBRT is a feasible option in addition to standard 3DCRT for MESCC patients, with the goal to consider future randomized trials if successful. Having a robust quality assurance process in this study ensures translatability going forward if future trials with multicenter and increased patient representation are to be considered. Trial registration clinicaltrials.gov; registration no. NCT03529708; https://clinicaltrials.gov/ct2/show/NCT03529708 ; First posted May 18, 2018.

Hematologic oncologic emergencies with an urgent indication for radiation are a relatively routine occurrence for the radiation oncologist. As patients are living longer and have multiple treatment options for their relapsed or refractory diseases, it is important that palliative treatments avoid precluding patients from or delaying next-line potentially curative treatments wherever possible. We highlight the following experiences from our clinical practice: newly diagnosed plasma cell disease causing cord compression; life threatening cutaneous lymphoma with tumors covering the majority of the body surface area; and relapsed/refractory diffuse large B-cell lymphoma (DLBCL) requiring bridging radiation to a mass impinging on the brachial plexus combined with chimeric antigen receptor (CAR)-T cell therapy. In each case, urgent palliative radiation was utilized, but the approaches were nuanced, with careful consideration of subsequent potential therapies and how the current course of radiation should be tailored for the best interplay with the overall treatment course and trajectory of the disease. With the rapid development of new therapies, it can be difficult to stay up to date on the most recent practice guidelines. Drawing on hematologic-specific guidelines, such as those provided by the International Lymphoma Radiation Oncology Group, and disease site experts can aid in ensuring patients are appropriately palliated and eligible for future therapies.

Purpose: Palliative radiotherapy (RT) plays a crucial role in alleviating symptoms associated with metastatic sarcoma. However, there is a lack of consensus on the optimal palliative radiation dose and fractionation for metastatic sarcomas. We analyzed the association between biologically effective radiation dose and symptom response for patients who underwent palliative RT for metastatic sarcomas., Methods and Materials: We retrospectively identified patients with metastatic sarcoma treated with palliative RT between 1999 and 2021 at our institution. We assessed the association between equivalent dose in 2 Gy fractions (EQD2) with an α/β of three and symptom relief or overall survival (OS) using univariable and multivariable analyses., Results: Of the 198 metastatic sites treated, the most common indications for palliative radiation were pain (n = 181, 91 %) and compression of adjacent structures (n = 16, 8 %). In our analysis, an EQD2 of > 20 Gy was associated with greater rates of short-term symptom relief (n = 143, 85 %) at the RT site compared to an EQD2 of ≤ 20 Gy (n = 14, 54 %, P = 0.001) with no reports of grade 3 or higher toxicity. However, there was no significant improvement in short-term symptom relief for higher radiation doses. Patients treated with an EQD2 of ≤ 20 Gy had a significantly worse performance status, but there was no significant difference in overall survival based on EQD2 on multivariable analysis., Conclusions: An EQD2 ≤ 20 Gy (e.g., 8 Gy in 1 fraction) provided inadequate palliative benefit in this series. An EQD2 > 20 Gy resulted in greater rates of symptom palliation in metastatic sarcomas, but further dose escalation did not improve symptom response or durability. These findings suggest standard palliative regimens such as 20 Gy in 5 fractions (EQD2 of 28 Gy) are effective for patients with metastatic sarcomas., Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: E.J.M. has served as a paid consultant for Guidepoint and GLG. The other authors declare no competing interests., (© 2024 The Author(s).)

ContextRandomized data support shorter radiotherapy courses for management of cancer-related symptoms in the palliative setting.ObjectivesThe purpose of this study was to evaluate the length of palliative radiotherapy before hospice enrollment among the elderly U.S. population, with a further focus on factors that influence the duration of radiation and the length of survival on hospice, including whether the duration of radiation was associated with length of survival on hospice.MethodsA total of 6982 patients with breast, prostate, lung, or colorectal cancer who received a course of radiotherapy within 30 days before hospice enrollment were identified within the Surveillance, Epidemiology, and End Results-Medicare linked database. The primary end points included the duration of palliative radiotherapy and the time from hospice enrollment through death (hospice duration). Multivariate linear regression and multivariate Cox models evaluated factors associated with the length of radiotherapy course and hospice duration.ResultsThe median length of palliative radiotherapy was 14 days, and the median hospice duration was 13 days. The course of palliative radiotherapy was longer than hospice duration in 48% of the patients. Breast and lung cancer were associated with longer courses of radiotherapy and shorter stays on hospice. Patients treated in freestanding radiation centers had longer courses of radiotherapy. For these groups, a longer radiotherapy course was not associated with longer hospice duration.ConclusionThis study found relatively long courses of radiotherapy before short lengths of survival on hospice. Future research is needed to identify barriers to shorter radiotherapy courses.

Purpose/ObjectivesDespite its widespread availability, the use of kilovoltage (kV) image guidance is often related to factors such as perceived adequacy of clinical patient setup and individual practice patterns. We sought to determine whether kV image guidance in the treatment of painful bone metastases would improve therapeutic efficacy.Materials/MethodsUnder an Institutional Review Board approved protocol, hospital records of 164 patients having received radiation therapy to 257 individual painful osseous metastases were retrospectively reviewed. Marginal logistic regression analyses using the generalized estimating equation (GEE) approach were used to investigate potential associations between pain reduction and several patient, disease, and treatment related variables. Correlation of kV image guidance with pain reduction was analyzed by univariate and multivariate GEE logistic regression analysis.ResultsMedian time to pain reduction was 3 days (range 0~109 days) from the start of radiation therapy. Pain reduction ≥ 50% was noted in 196 (77%) metastatic lesions with 136 (53%) demonstrating complete pain relief. Patients with metastatic lesions from non-small cell lung cancer experienced less pain relief (p = 0.007). Disease extension outside of bone was a negative predictor for pain reduction (p = 0.02). On univariate and multivariate logistic regression, kV image guidance demonstrated a statistically significant correlation with improved pain control in cases involving treatment of the lower extremities (p = 0.03) and those with fewer treatment fractions (p = 0.01), particularly in the setting of extra-osseous disease extension (p = 0.003).ConclusionsKilovoltage image guidance in the treatment of painful bone metastases may offer greater pain control through improved patient setup, particularly for patients with tumors of the lower extremities, extraosseous disease extension, and fewer treatment fractions.

Purpose/Objectives: Despite its widespread availability, the use of kilovoltage (kV) image guidance is often related to factors such as perceived adequacy of clinical patient setup and individual practice patterns. We sought to determine whether kV image guidance in the treatment of painful bone metastases would improve therapeutic efficacy. Materials/Methods: Under an Institutional Review Board approved protocol, hospital records of 164 patients having received radiation therapy to 257 individual painful osseous metastases were retrospectively reviewed. Marginal logistic regression analyses using the generalized estimating equation (GEE) approach were used to investigate potential associations between pain reduction and several patient, disease, and treatment related variables. Correlation of kV image guidance with pain reduction was analyzed by univariate and multivariate GEE logistic regression analysis. Results: Median time to pain reduction was 3 days (range 0~109 days) from the start of radiation therapy. Pain reduction ≥ 50% was noted in 196 (77%) metastatic lesions with 136 (53%) demonstrating complete pain relief. Patients with metastatic lesions from non-small cell lung cancer experienced less pain relief (p = 0.007). Disease extension outside of bone was a negative predictor for pain reduction (p = 0.02). On univariate and multivariate logistic regression, kV image guidance demonstrated a statistically significant correlation with improved pain control in cases involving treatment of the lower extremities (p = 0.03) and those with fewer treatment fractions (p = 0.01), particularly in the setting of extra-osseous disease extension (p = 0.003). Conclusions: Kilovoltage image guidance in the treatment of painful bone metastases may offer greater pain control through improved patient setup, particularly for patients with tumors of the lower extremities, extraosseous disease extension, and fewer treatment fractions. [ABSTRACT FROM AUTHOR]

Abstract Background Determining the appropriate gross tumor volume is important for irradiation planning in addition to palliative radiation for bone metastases. While irradiation planning is commonly performed using simulation computed tomography (CT), magnetic resonance imaging (MRI), bone scintigraphy, and 18fluorodeoxyglucose-positron emission tomography-CT (18FDG-PET-CT) are more sensitive for detecting bone metastasis and invasion areas. Therefore, this study evaluated whether pretreatment imaging modalities influenced the response to palliative radiation therapy (i.e., the irradiation effect) for painful bone metastases from solid malignant carcinomas. Methods Consecutive patients with painful bone metastases treated with palliative radiation between January 2013 and December 2017 at our institution were included. We retrospectively investigated the pretreatment images from the different imaging modalities (CT, MRI, bone scintigraphy, and 18FDG-PET-CT) obtained between 1 month before and the initiation of palliative radiation and determined the primary site of carcinoma, histological type, metastatic lesion type (osteolytic, osteoblastic, or mixed), pathological fracture, and metastatic site (vertebral or not). We then evaluated the relationship between these factors and treatment response. We defined “response” as the condition in which patients achieved pain relief or reduced the use of painkiller medicines. Results In total, 131 patients (78 men and 53 women) were included; the median age was 66 years (range, 24–89 years). Prescribed doses were 8–50 Gy/1–25 fractions with 2–8 Gy/fraction. Among the 131 patients, 105 were responders (response rate, 80%). The imaging modalities performed before irradiation were CT in 131 patients, MRI in 54, bone scintigraphy in 56, and 18FDG-PET-CT in 14. The Welch t-test and chi-square test showed no significant association between treatment response and each factor. Multiple logistic regression analysis including the imaging modality, metastatic site, and pathological fracture also showed no significant association with each factor. Conclusions There was no significant relationship between the type of pretreatment imaging and treatment response for painful bone metastases. Thus, setting the appropriate radiation field according to CT images and clinical findings could help avoiding further image inspection before palliative radiation for painful bone metastases.

Purpose30-day mortality (30-DM) is a parameter with widespread use as an indicator of avoidance of harm used in medicine. Our objective is to determine the 30-DM followed by palliative radiation therapy (RT) in our department and to identify potential prognosis factors.Material/MethodsWe conducted a retrospective cohort study including patients treated with palliative RT in our center during 2018 and 2019. Data related to clinical and treatment characteristics were collected.ResultsWe treated 708 patients to whom 992 palliative irradiations were delivered. The most frequent primary tumor sites were lung (31%), breast (14.8%), and gastrointestinal (14.8%). Bone was the predominant location of the treatment (56%), and the use of single doses was the preferred treatment schedule (34.4%). The 30-DM was 17.5%. For those who died in the first month the median survival was 17 days. Factors with a significant impact on 30-DM were: male gender (p < 0.0001); Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 2–3 (p = 0.0001); visceral metastases (p = 0.0353); lung, gastrointestinal or urinary tract primary tumors (p = 0.016); and single dose RT (p =

Purpose: 30-day mortality (30-DM) is a parameter with widespread use as an indicator of avoidance of harm used in medicine. Our objective is to determine the 30-DM followed by palliative radiation therapy (RT) in our department and to identify potential prognosis factors. Material/Methods: We conducted a retrospective cohort study including patients treated with palliative RT in our center during 2018 and 2019. Data related to clinical and treatment characteristics were collected. Results: We treated 708 patients to whom 992 palliative irradiations were delivered. The most frequent primary tumor sites were lung (31%), breast (14.8%), and gastrointestinal (14.8%). Bone was the predominant location of the treatment (56%), and the use of single doses was the preferred treatment schedule (34.4%). The 30-DM was 17.5%. For those who died in the first month the median survival was 17 days. Factors with a significant impact on 30-DM were: male gender (p < 0.0001); Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 2–3 (p = 0.0001); visceral metastases (p = 0.0353); lung, gastrointestinal or urinary tract primary tumors (p = 0.016); and single dose RT (p = <0.0001). In the multivariate analysis, male gender, ECOG PS 2–3, gastrointestinal and lung cancer were found to be independent factors related to 30-DM. Conclusion: Our 30-DM is similar to previous studies. We have found four clinical factors related to 30-DM of which ECOG was the most strongly associated. This data may help to identify terminally ill patients with poor prognosis in order to avoid unnecessary treatments. [ABSTRACT FROM AUTHOR]

Abstract Prostate cancer (PCa) is one of the most common malignancies associated with bone metastases, and palliative radiation therapy (RT) is an effective treatment option. A total of 2641 patients were identified with PCa and bone metastases at diagnosis from 2010 to 2014 in the NCDB. Fractionation scheme was designated as short course ([SC‐RT]: 8 Gy in 1 fraction and 20 Gy in 5 fractions) vs long course ([LC‐RT]: 30 Gy in 10 fractions and 37.5 Gy in 15 fractions). Patient characteristics were correlated with fractionation scheme using logistic regression. Overall survival was analyzed using the Kaplan‐Meier method, log‐rank test, Cox proportional hazards models, and propensity score‐matched analyses. A total of 2255 (85.4%) patients were included in the LC‐RT group and 386 (14.6%) patients in the SC‐RT group. SC‐RT was more common in patients over 75 years age (odds ratio [OR]: 1.70, 95% confidence interval [CI] 1.32‐2.20), treatment at an academic center (OR: 1.76, 1.20‐2.57), living greater than 15 miles distance to treatment facility (OR: 1.38, 1.05‐1.83), treatment to the rib (OR: 2.99, 1.36‐6.60), and in 2014 (OR: 1.73, 1.19‐2.51). RT to the spine was more commonly long course (P .5). LC‐RT remains the most common treatment fractionation scheme for palliative bone metastases in PCa patients. Use of palliative SC‐RT is increasing, particularly in more recent years, for older patients, treatment at academic centers, and with increasing distance from a treatment center.

Purpose of Review: The management of metastatic disease is evolving. As systemic therapies continue to improve, there is increasing recognition that local therapy to distant sites of disease impacts outcomes among many histologies, including sarcoma. Various local therapy strategies exist, but radiation therapy (RT) is particularly critical as it provides a non-invasive, yet locally ablative strategy for metastatic management. Recent Findings: Various delivery techniques including stereotactic body radiation therapy (SBRT) or hypofractionated RT can escalate the biologic dose while avoiding normal tissues in order to reduce tumor burden, provide durable local control, palliate symptoms, potentially prevent further seeding of metastatic lesions, and potentially prolong survival. Summary: This review summarizes the current state of the literature on the important role of RT for the treatment of metastatic sarcoma organized by the site of metastatic disease. Particularly for patients presenting with oligometastatic or oligoprogressive disease, consolidative RT is an important local therapy strategy to be considered in a multidisciplinary setting. [ABSTRACT FROM AUTHOR]

Background: Educational deficiencies among hospice and palliative medicine (HPM) physicians contribute to suboptimal utilization of palliative radiotherapy (PRT) for patients with advanced cancer. Objective: To survey HPM fellowship program directors regarding the need for PRT education in HPM fellowship. Design: We conducted a cross-sectional survey of HPM fellowship program directors in June 2018. We used a 5-point Likert-type scale to assess agreement with statements related to PRT education. Setting/Subjects: Program directors for all United States Accreditation Council for Graduate Medical Education-accredited HPM fellowship programs with at least one enrolled fellow at the time of survey distribution were included. Results: Eighty-one of 120 eligible program directors completed the survey (68% response rate). Nearly all of the respondents agreed that HPM physicians should possess a working knowledge of PRT and that the principles of PRT should be formally taught in HPM fellowship. Thirty percent of HPM fellowship programs, however, lacked a PRT curriculum and only 14% of programs provided more than two hours of PRT education. Limited didactic time, lack of interest among fellows, and lack of collaboration with radiation oncologists were not perceived to be significant barriers to incorporating PRT education into HPM fellowship. More than 75% of program directors indicated that they would consider implementing a PRT curriculum designed specifically for HPM physicians if one were available. Conclusion: There is a need for PRT education in HPM fellowship. This need may be best addressed by developing a widely accessible PRT curriculum designed to meet the needs of HPM physicians. [ABSTRACT FROM AUTHOR]

Background: Insufficient knowledge of palliative radiotherapy (PRT) among hospice and palliative medicine (HPM) physicians is thought to be a barrier to the provision of high-quality palliative care. Objective: To assess the need for PRT education in HPM fellowship. Design: A cross-sectional survey of HPM fellows was conducted in June 2018. Setting/Subjects: The survey was distributed to accredited HPM fellowship programs in the United States for distribution to enrolled fellows; 114 fellows responded to the survey. Results: Nearly all respondents agreed that the principles of PRT should be taught in HPM fellowship, yet 51% had received no PRT education and 35% had received only one or two hours. Only 25% of respondents rated their working knowledge of PRT as sufficient, 40% felt confident in identifying radiation oncology emergencies or managing radiotherapy side effects, and 52% felt confident in assessing which patients to refer for radiotherapy. More than 75% agreed that were they more knowledgeable about PRT, they would be more likely to consider referral to radiation oncology, to collaborate with radiation oncologists, and to advocate for a short course of treatment based on a patient's prognosis or goals or care. Fellows who received PRT education in fellowship had significantly greater knowledge of and more favorable attitudes toward the use of radiotherapy. This difference was the greatest among fellows who had received at least five hours of PRT education. Conclusion: There is a need for PRT education in HPM fellowship. Efforts to address this need may lead to more appropriate utilization of PRT for patients with advanced cancer. [ABSTRACT FROM AUTHOR]

Background: As patients' accurate understanding of their prognosis is essential for informed end-of-life planning, identifying associated factors is important. Objective: We examine if receiving palliative chemotherapy or radiation, and the perception of those treatments as curative or noncurative, is associated with prognostic understanding. Design: Cross-sectional analyses from a multisite, observational study. Setting/Subjects: Patients with advanced cancers refractory to at least one chemotherapy regimen (N = 334). Measurements: In structured interviews, patients reported whether they were receiving chemotherapy or radiation, and whether its intent was curative or not. Their responses were categorized into three groups: patients not receiving chemotherapy/radiation (no cancer treatment group); patients receiving chemotherapy/radiation and misperceiving it as curative (treatment misperception group); and patients receiving chemotherapy/radiation and accurately perceiving it as noncurative (accurate treatment perception group). Patients also reported on various aspects of their prognostic understanding (e.g., life expectancy). Results: Eighty-six percent of the sample was receiving chemotherapy or radiation; of those, 16.7% reported the purpose of treatment to be curative. The no-treatment group had higher prognostic understanding scores compared with the treatment misperception group (adjusted odds ratio [AOR] = 5.00, p < 0.001). However, the accurate treatment perception group had the highest prognostic understanding scores in comparison to the no-treatment group (AOR = 2.04, p < 0.05) and the treatment misperception group (AOR = 10.19, p < 0.001). Conclusions: Depending on patient perceptions of curative intent, receipt of palliative chemotherapy or radiation is associated with better or worse prognostic understanding. Research should examine if enhancing patients' understanding of treatment intent can improve accurate prognostic expectations. [ABSTRACT FROM AUTHOR]

• All but one endpoint maintained the same meta-conclusion over publication time. • New studies did not change the scientific conclusion of existing literature. • SFRT is equally as efficacious as MFRT. • The majority of included studies have low risk of bias. • Future resources should not be used to repeat these studies, and can be better allocated to test other hypotheses. There has been a long-standing debate regarding the efficacy of single fraction radiotherapy (SFRT) compared to multiple fraction radiotherapy (MFRT); many systematic reviews and meta-analyses have been conducted to resolve the debate and suggested SFRT is equally as effective as MFRT. Given the adequate amalgamated sample size that exists, it is difficult to appreciate the need for further RCTs. The aim of this paper was to conduct a cumulative meta-analysis to determine whether further trials will be of value to the meta-conclusion. This paper also assessed publication quality. A total of 29 studies were used in our meta-analysis. Comprehensive Meta-Analysis (Version 3) by Biostat was used to conduct a cumulative meta-analysis. The Cochrane Risk of Bias assessment tool was employed to assess study quality of the included RCTs. Funnel plots were generated using Review Manager (RevMan 5.3) by Cochrane IMS, to visually assess for publication bias. All but one endpoint, overall response rates in assessable patients, maintained the same meta-conclusion over publication time; published studies did not change the amalgamated scientific conclusion of existing literature. Additional studies have simply confirmed pre-existing conclusions and refined the point estimate of the efficacy estimate. The majority of included studies have low risk of bias. In conclusion, the meta-conclusion has remained consistent over time – SFRT is equally as efficacious as MFRT. Recent studies have had little impact on the overall conclusion, and given the vast amount of resources to execute a randomized trial, future resources should not be used to repeat these studies, and can be better allocated to test other hypotheses. [ABSTRACT FROM AUTHOR]

This work describes a novel application of MR-guided online adaptive radiotherapy (MRgoART) in the management of patients whom urgent palliative care is indicated using statum-adaptive radiotherapy (STAT-ART). The implementation of STAT-ART, as performed at our institution, is presented including a discussion of the advantages and limitations compared to the standard of care for palliative radiotherapy on conventional c-arm linacs. MR-based treatment planning techniques of STAT-ART for density overrides and deformable image registration (DIR) of diagnostic CT to the treatment MR are also addressed. [ABSTRACT FROM AUTHOR]

Background: Improvements in radiation delivery and systemic therapies have resulted in few remaining indications for palliative whole brain radiation therapy (WBRT). Most centers preferentially use stereotactic radiotherapy (SRT) and reserve WBRT for those with >15 lesions, leptomeningeal presentation, rapidly progressive disease, or limited estimated survival. Despite regional differences among preferred dose, fractionation, and treatment technique, we predict survival post-WBRT will remain poor-indicating appropriate application of WBRT in this era of SRT and improved systemic therapies., Methods: A multi-center, international retrospective analysis of patients receiving WBRT in 2022 was performed. Primary end point was survival after WBRT. De-identified data were analyzed centrally. Patients receiving WBRT as part of a curative regimen, prophylactically, or as bridging therapy were excluded. The collected data consisted of patient parameters including prescription dose and fractionation, use of neurocognitive sparing techniques and survival after WBRT. Survival was calculated via the Kaplan-Meier method., Results: Of 29,943 international RT prescriptions written at ten participating centers in 2022, 462 (1.5%) were for palliative WBRT. Participating centers were in the United States (n=138), the United Kingdom (n=111), Hong Kong (n=72), Italy (n=49), Belgium (n=45), Germany (n=27), Ghana (n=15), and Cyprus (n=5). Twenty-six different dose regimens were used. The most common prescriptions were for 3,000 cGy over 10 fractions (45.0%) and 2,000 cGy over 5 fractions (43.5%) with significant regional preferences (P<0.001). Prior SRT was delivered in 32 patients (6.7%), hippocampal avoidance (HA) was used in 44 patients (9.5%), and memantine was prescribed in 93 patients (20.1%). Survival ranged from 0 days to still surviving at 402 days post-treatment. The global median overall survival (OS) was 84 days after WBRT [95% confidence interval (CI): 68.0-104.0]. Actuarial survival at 7 days, 1 month, 3 months, and 6 months were 95%, 78%, 48%, and 32%, respectively. Twenty-seven patients (5.8%) were unable to complete their prescribed WBRT., Conclusions: This moment-in-time analysis confirms that patients with poor expected survival are being appropriately selected for WBRT-illustrating the dwindling indications for WBRT-and demonstrates the variance in global practice. Since poor survival precludes patients from deriving benefit, memantine and HA are best suited in carefully selected cases.

Background and Objective: Malignant epidural spinal cord compression (MESCC), often presenting with back pain and motor/sensory deficits, is associated with poor survival, particularly when there is loss of ambulation. The purpose of this review is to evaluate the literature and discuss appropriate workup and management of MESCC, specifically in the emergent setting., Methods: A PubMed search was conducted on "spinal cord compression" and "radiation therapy." Articles were analyzed for the purpose of this narrative review., Key Content and Findings: If MESCC is suspected, neurologic examination and complete spine imaging are recommended. Emergent treatment is indicated if there is radiographic evidence of high-grade compression and/or clinically significant motor deficits. Treatment involves a combination of medical management, surgical decompression, radiation therapy (RT), and rehabilitation. For motor deficits, emergent initiation of high dose steroids is recommended. Circumferential surgical decompression ± stabilization followed by RT provides superior clinical outcomes than RT alone. For patients whom surgery is not reasonable, RT alone may provide significant treatment response which depends on radioresponsiveness of the pathology. Systemic therapy, if indicated, is typically reserved till after primary treatment of MESCC, but patients with chemoresponsive tumors may receive primary chemotherapy. The selected RT schedule should be personalized to each patient and commonly is 30 Gy in 10 fractions (fx), 20 Gy in 5 fx, or 8 Gy in 1 fx. MESCC recurrence may be treated with additional RT, if within the spinal cord tolerance, or surgery. Stereotactic body radiation therapy (SBRT) has been used for high grade MESCC in patients with relatively intact neurologic function at a few centers with a very robust infrastructure to support rapid initiation of treatment within a short period of time, but is generally not feasible for most clinical practices. SBRT may be advantageous for low grade MESCC, recurrence, or in the post-operative setting. Detection of MESCC prior to development of high-grade compression or deterioration of neurologic function may allow patients to benefit more from advanced therapies and improve prognosis., Conclusions: MESCC is a devastating condition; optimal treatment should be personalized to each patient and approached collaboratively by a multidisciplinary team.