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Objective: Oral mucositis is a frequent clinical condition that has been shown to affect pediatric cancer patients. Oral Mucositis Daily Questionnaire (OMDQ) is one of the few available patient-reported outcome measures to assess the extent and impact of oral mucositis. The objectives of the study were to translate the Mouth and Throat Soreness-Related Questions of the OMDQ into Chinese (OMDQ MTS-Ch) for children and adolescents aged 6–18 years receiving chemotherapy and to evaluate its psychometric properties. Methods: This was part of a multicenter, prospective cohort study involving two phases. Phase I involved forward-backward translation to fit the cognitive and linguistic age level of the children and adolescents, followed by face and content validation, together with pretesting. In Phase II, which evaluated the internal consistency, test-retest reliability, and discriminant validity, a total of 140 patients completed the OMDQ MTS-Ch for 14 days. Results: The OMDQ MTS-Ch had satisfactory face and content validities. The Cronbach's alpha coefficient of the OMDQ MTS-Ch was 0.984. All of the corrected item-total correlations were higher than 0.90. The test-retest intraclass correlation coefficient between consecutive days for the OMDQ MTS-Ch items ranged from 0.576 to 0.983; the only value that was not over 0.70 was that for the paired study days 7 and 8 for the item of talking. The mean area-under-the-curve OMDQ MTS-Ch item scores were significantly different among patients with different degrees of mucositis severity (P < 0.001), supporting the discriminant validity. Conclusions: It has been shown that the OMDQ MTS-Ch has a good level of reliability and discriminant validity and can be completed by children aged ≥6 years and adolescents on a daily basis to measure mucositis and its related functional limitations.

Background Children with Down syndrome (DS) are at higher risk of developing acute leukemia. Treatment continues to evolve as we accumulate better understanding of the distinctive clinical and biological features of acute leukemia in DS patients. Procedure A retrospective review of the clinical features, treatment outcomes, and survival of DS children with acute leukemia in Hong Kong from 1993 to 2013 was conducted. Patients were identified from the registry of the Hong Kong Pediatric Hematology and Oncology study group. Results This cohort included a total of 29 patients with DS. Ten were diagnosed with acute lymphoblastic leukemia and 19 had acute myeloid leukemia (AML). The mean follow-up duration was 8.3 years (range, 0.6 mo to 18.1 y). The 5-year overall survival and event-free survival for DS-acute lymphoblastic leukemia and DS-AML were 65.6%, 54.9%, 89.5%, and 89.5%, respectively. Conclusions The clinical characteristics and treatment outcomes of DS patients with acute leukemia in Hong Kong were comparable with results from other international study groups. Patients with DS-AML had a better prognosis.

Introduction Haemoglobin Bart's hydrops fetalis syndrome was once considered a fatal condition. However, advances over the past two decades have enabled survival of affected patients. Data relating to their morbidities and outcomes will help medical specialists formulate a management plan and parental counselling. Methods All babies with the syndrome who survived beyond the neonatal period and were subsequently managed long-term in eight public hospitals in Hong Kong from 1 January 1996 to 31 December 2015 were included. Patient and parent characteristics, antenatal care, reasons for continuation of pregnancy, intrauterine interventions, perinatal course, presence of congenital malformations, stem-cell transplantation details, and long-term neurodevelopmental outcomes were reviewed. Results A total of nine patients were identified, of whom five were female and four male. The median follow-up duration was 7 years. All were Chinese and were homozygous for the Southeast Asian α-thalassaemia deletion. Five of the nine mothers received antenatal care at a public hospital and opted to continue the pregnancy after antenatal diagnosis and counselling. Despite intrauterine transfusions, all babies were born with respiratory depression and required intubation and mechanical ventilation during the neonatal period. Hypospadias was identified in all four male infants. Growth retardation, global developmental delay, and residual neurological deficits were noted in two-thirds of the patients. Haematopoietic stem-cell transplantation was performed in two patients, who became transfusion-independent. Conclusions Survival of patients with Bart's hydrops fetalis syndrome is possible but not without short- and long-term complications; local epidemiology is comparable to that documented for an international registry. Detailed antenatal counselling of parents with a non-judgemental attitude and cautious optimism are imperative.

Background We sought to assess myocardial iron load and fibrosis, which may potentially affect cardiac function, in adult survivors of childhood leukemias and their relationships with left (LV) and right ventricular (RV) function. Procedure Fifty-eight (33 males) adult survivors, aged 24.5 ± 4.4, underwent cardiac magnetic resonance (CMR) at 16.6 ± 5.8 years after completion of treatment. Myocardial iron load and fibrosis were quantified using respectively T2* scan and late gadolinium enhancement. Right and left ventricular ejection fraction (EF) was measured by CMR, while myocardial function was assessed using tissue Doppler imaging. Results None of the survivors had significant myocardial iron overload (T2* 0.05). Conclusion Ventricular fibrosis may occur in long term survivors of childhood leukemias and is related to diastolic function in the absence of significant myocardial iron overload. Pediatr Blood Cancer 2015;62:698–703. © 2015 Wiley Periodicals, Inc.

This study sought to characterize the range of oral symptoms and affect upon quality of life reported by pediatric and adolescent patients in relation to the severity of oral mucositis and symptom burden during chemotherapy. A multicenter study included 140 patients between 6 and 18 years of age who had been treated with chemotherapy. Participants completed the self-report Mouth and Throat Soreness-related Questions of the Oral Mucositis Daily Questionnaire (OMDQ) for 14 days and the Oral Mucositis-specific Quality of Life Measure (OMQoL) at baseline, day 7, and day 14. The incidences of non-severe and severe mucositis were 23% (n = 32) and 18% (n = 25), respectively. The symptoms reported by the patients with oral mucositis were related to eating (82.4%), swallowing (78.9%), drinking (75.4%), sleeping (71.9%), and talking (43.9%). Approximately 39% (22 out of 57) of patients with mucositis reported at least two simultaneous symptoms resulting from oral mucositis. About a quarter of them (25%, 14 out of 57) reported having all five symptoms concurrently. The mean area under curve (AUC) scores for symptom severity were significantly higher in the severe mucositis group (mean 0.95 to 1.21; 95% CI 0.76 to 1.34) compared with the non-severe (mean 0.50 to 1.06; 95% CI 0.35 to 1.30) and the without mucositis (mean 0 to 0.09; 95% CI 0 to 0.12) groups (p

There is a dearth of studies with respect to oral mucositis (OM) in the paediatric and adolescent populations. The purpose of this prospective cohort study was to examine the incidence and risk factors associated with OM in paediatric and adolescent patients receiving chemotherapy. OM assessments were made daily until 14 days after chemotherapy using the self-report Mouth and Throat Soreness-Related Questions of the Oral Mucositis Daily Questionnaire (OMDQ MTS). Potential risk factors included age, gender, prior OM, anxiety level, cancer diagnosis, nausea/vomiting, use of growth factor, neutrophil count, liver enzymes, and creatinine value. Multiple logistic, Cox proportional hazards, and ordinal regression analyses were used to determine risk factors for the incidence and time to onset of MTS scores of ⩾2, and MTS scores across 14 days by AUC categories, respectively, after adjusting for chemotherapy. A total of 140 patients who were 6–18 years of age were evaluated. Forty-one percent (95% CI, 32.6–48.8%) developed OM; of these, 23% and 18% reported a maximum MTS score of 2 and 3–4 as the worst OM, respectively. The mean time to onset of OM was 4.7 ± 2.7 days with a mean duration of 6.3 ± 4 days. Prior OM (RR 1.90–3.94), a higher level of anxiety (RR 1.27–1.46), WHO grade 1–2 (RR 1.86–4.59) and 3–4 (RR 3.08–9.19) neutropenia were significantly associated with a higher probability of the incidence, earlier onset, and greater severity of OM, after controlling for chemotherapy (p < 0.01). OM was associated with indirect cytotoxicity, prior OM, and anxiety level after controlling for chemotherapy where neutropenia was found to be the most important factor.

Aims We tested the hypothesis that myocardial stiffness as assessed by diastolic wall strain (DWS) is altered in adult survivors of childhood leukaemias with preserved left ventricular (LV) ejection fraction and explored its association with myocardial fibrosis and diastolic deformation. Methods and results Ninety-four (53 males) adult survivors of childhood leukaemias aged 22.2 ± 5.5 years and 66 (36 males) healthy controls were studied retrospectively. Diastolic wall strain and calibrated integrated backscatter (cIB) were measured as indices of myocardial stiffness and fibrosis, respectively. Left and right ventricular (RV) diastolic and torsional mechanics were interrogated using speckle tracking echocardiography. Patients had significantly lower LV DWS, and hence stiffer LV myocardium, and greater myocardial cIB in patients than controls (all P < 0.001). Left ventricular longitudinal, radial, and circumferential early diastolic strain rates, circumferential late diastolic strain rate, and peak twisting and untwisting velocities, tricuspid annular early diastolic velocity, and RV-free wall longitudinal early diastolic strain rate were significantly lower in patients than controls (all P < 0.05). Diastolic wall strain correlated inversely with myocardial cIB, and positively with LV longitudinal, radial, and circumferential early diastolic strain rates (all P < 0.05), while myocardial cIB correlated inversely with LV radial and circumferential early diastolic strain rates, circumferential late diastolic strain rate, peak twisting and untwisting velocities, and tricuspid annular e velocity (all P < 0.05). Conclusion In adult survivors of childhood leukaemias, despite the preservation of LV ejection fraction, increased stiffness of the LV myocardium is evident and is associated with myocardial fibrosis and impaired ventricular diastolic function.

This report demonstrates pulmonary haemorrhage as a differential cause of anaemia. Idiopathic pulmonary hemosiderosis is a rare disease in children; it is classically described as a triad of haemoptysis, pulmonary infiltrates on chest radiograph, and iron-deficiency anaemia. However, anaemia may be the only presenting feature of idiopathic pulmonary hemosiderosis in children due to occult pulmonary haemorrhage. In addition, the serum ferritin is falsely high in idiopathic pulmonary hemosiderosis which increases the diagnostic difficulty. We recommend that pulmonary haemorrhage be suspected in any child presenting with iron-deficiency anaemia and persistent bilateral pulmonary infiltrates.

It has been well recognized that intra-thoracic surgery is a major cause of chylothorax in the newborn period; however, catheter-related thrombosis could also be a cause. We report a preterm baby who presented with right chylothorax secondary to venous thrombosis postinadvertent right internal jugular vein catheterization. The complication resolved with drainage, catheter removal and low molecular weight heparin. The literature on neonatal chylothorax and thrombosis and case reports reporting thrombosis-related chylothorax that have been successfully treated with anticoagulation are reviewed.

BACKGROUND Renal tumors are one of the most common tumors in children. We aim at evaluating the characteristics and the outcome of Wilms tumor and other malignant kidney tumors in Hong Kong. PROCEDURE Between January 1990 to December 2010, 68 patients under the age of 18 with malignant renal tumors were diagnosed and received treatment in Hong Kong. Clinical records were updated regularly. Prognostic factors and survival rate were evaluated. RESULTS Fifty-four patients were diagnosed with Wilms tumor. The annual incidence was estimated to be 2.29 per million. The mean age was 38 months. Median follow-up was 9.2 years. The event-free survival and overall survival rate at 10 years were 85.2% and 92.6%, respectively. A pair of siblings with familial extrarenal Wilms tumor was included. Pulmonary metastasis did exhibit a significant difference in survival rate. Eight cases of clear cell sarcoma of the kidneys were reported and the survival rate was 100%. CONCLUSIONS The clinical characteristics and outcome of the patients diagnosed Wilms tumor were comparable with other developed countries. Relatively high proportion and excellent outcome were found in clear cell sarcoma of the kidneys.

The advent of magnetic resonance imaging (MRI) organ-specific iron assessment and oral chelators has improved survival in European thalassemia major patients.[1][1] It is uncertain whether this experience is reproducible in Asia, with our inherent differences in genetic and co-morbid factors, as

1. Oral mucositis (OM) is common among paediatric patients receiving chemotherapy.2. Paediatric patients who are neutropaenic, with high levels of anxiety, or with a history of OM have a greater risk and an earlier onset of OM.3. OM has negative effects on clinical outcomes and the patient’s life, including on oral function and quality of life.

The purpose of this study is to determine the burden of the peak severity of oral mucositis and severity over time on selected clinical outcomes in paediatric and adolescent patients receiving chemotherapy.A multicentre study enrolled 140 patients between the ages of 6 and 18 years, who had been treated with chemotherapy and completed the self-report Mouth and Throat Soreness-related questions of the Oral Mucositis Daily Questionnaire for 14 days. Clinical data were collected from patients' medical records during the first 14 days after starting chemotherapy.Forty-one percent developed oral mucositis. Multiple linear regression analysis revealed that oral mucositis was significantly associated with an increased loss of baseline body weight, after controlling for nausea/vomiting (β = 0.34, p = 0.002). Multiple logistic regression analysis showed that severe mucositis was significantly associated with a higher probability of fluid replacement, after controlling for nausea/vomiting (adjusted OR = 12.8; 95 % CI = 2.7-61.0; p = 0.001). In addition, severe mucositis was significantly associated with a higher probability of fever, after controlling for neutropoenia (adjusted OR = 5.4; 95 % CI = 1.8-15.4; p = 0.002). No difference was observed for oral or systemic infections among the subgroups. About 5 % of the patients with oral mucositis had delays in chemotherapy (≤ 7 days). None of the patients had dose modification or unplanned hospitalization due to oral mucositis. The associations of peak severity and overall oral mucositis with adverse clinical outcomes in paediatric and adolescent patients were equivalent.Oral mucositis is associated with negative effects on clinical outcomes.

A Chinese adolescent girl presented with secondary amenorrhea. During follow-up, she gradually developed Cushingoid features and virilization. After a series of endocrine investigations, including urinary steroid profiling, a diagnosis of adrenocortical carcinoma was made. The treatment and prognosis of the disease are discussed.

OBJECTIVE: To report the experience of using rasburicase as a single-dose treatment for childhood leukemia presenting with hyperuricemia. CASE SUMMARIES: Three children with acute lymphoblastic leukemia presenting with hyperuricemia received rasburicase as a single intravenous dose just prior to the start of chemotherapy. This was followed by rapid reduction of serum uric acid levels within 24 hours, which remained low throughout induction therapy while allopurinol and hydration therapy without urinary alkalinization ensued. Subclinical tumor lysis was evidenced by the appearance of hyperphosphatemia and hypocalcemia in all cases and hyperkalemia in 1 patient. These abnormalities were transient, and each patient's renal function gradually improved from pretreatment baseline without requiring dialysis. DISCUSSION: Our experience suggests that hyperuricemia in children at risk for tumor lysis can be managed with a briefer regimen of rasburicase than the recommended 5- to 7-day course. CONCLUSIONS: A shorter course of rasburicase treatment, including single-dose injection, is feasible and will improve the cost-effectiveness profile of the otherwise expensive compound.

Background We sought to quantify plasma high sensitivity cardiac troponin (hs-cTnT) levels, their determinants, and their associations with left ventricular (LV) myocardial deformation in adult survivors of childhood acute leukaemias. Methods and Results One hundred adult survivors (57 males) of childhood acute leukaemias, aged 24.1±4.2 years, and 42 age-matched controls (26 males) were studied. Plasma cTnT was determined using a highly sensitive assay. Genotyping of NAD(P)H oxidase and multidrug resistance protein polymorphisms was performed. Left ventricular function was assessed by conventional, three-dimensional, and speckle tracking echocardiography. The medians (interquartile range) of hs-cTnT in male and female survivors were 4.9 (4.2 to 7.2) ng/L and 1.0 (1.0 to 3.5) ng/L, respectively. Nineteen survivors (13 males, 6 females) (19%) had elevated hs-cTnT (>95th centile of controls). Compared to those without elevated hs-TnT levels, these subjects had received larger cumulative anthracycline dose and were more likely to have leukaemic relapse, stem cell transplant, and cardiac irradiation. Their LV systolic and early diastolic myocardial velocities, isovolumic acceleration, and systolic longitudinal strain rate were significantly lower. Survivors having CT/TT at CYBA rs4673 had higher hs-cTnT levels than those with CC genotype. Functionally, increased hs-cTnT levels were associated with worse LV longitudinal systolic strain and systolic and diastolic strain rates. Conclusions Increased hs-cTnT levels occur in a significant proportion of adult survivors of childhood acute leukaemias and are associated with larger cumulative anthracycline dose received, history of leukaemic relapse, stem cell transplant, and cardiac irradiation, genetic variants in free radical metabolism, and worse LV myocardial deformation.