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Background EuroLung Risk scores were established to predict postoperative morbidity and mortality in patients undergoing anatomic lung resections. We aimed to perform an external validation of the EuroLung scores, which were calculated from data of the European Society of Thoracic Surgeons database, in our video-assisted thoracoscopic surgery cohort. Methods All available EuroLung scores were calculated for 718 patients scheduled for anatomic video-assisted thoracoscopic surgery resections between 2009 and 2019. Morbidity and mortality according to the definitions of the EuroLung scores were analyzed in a prospectively maintained database. Results Overall observed complication rate was 10.45%. Scores showed weak individual correlation (η = 0.155–0.174). The EuroLung1 app score showed the biggest area under the receiver operative characteristic (ROC) curve with 0.660. Binary logistic regression analysis showed that predicted postoperative forced expiratory volume in 1 s was associated with increased complications in both EuroLung1 and parsimonious EuroLung1 scores. Thirty-day mortality was 0.7% (predicted 1.10–1.40%) and was associated with predicted postoperative forced expiratory volume in 1 s for both EuroLung2 and parsimonious EuroLung2 scores. The EuroLung2 (2016) showed the biggest area under the ROC curve with 0.673. Only a very weak eta correlation between predicted and observed mortality was found for both aggregate EuroLung2, EuroLung2 (2016), EuroLung2 (2019), and parsimonious EuroLung2 (2016) (η = 0.025/0.015/0.011/0.009). Conclusion EuroLung scores help to estimate postoperative morbidity. However, even with the highest aggregate EuroLung scores possible only 50% suffer from postoperative morbidity. Although calibration of the scores was acceptable, discrimination between predicted and observed events was poor. Therefore, individual correlation between predicted and observed events is weak. Therefore, EuroLung scores may be best used to compare institutional quality of care to the European Society of Thoracic Surgeons database but should not be used to preclude patients from surgical treatment.

Patient pathways from first suspicious imaging until final surgical treatment vary and in some instances cause considerable delay. This study aims to investigate the impact of this delay on survival of lung cancer patients. The institutional database was queried to identify patients with primary lung cancer who were treated with primary surgery. Time intervals were defined as date of first suspicious medical images until date of surgical treatment. All patients received PET-CT staging and tissue confirmation prior to treatment planning in a multidisciplinary tumor board. Patients with unknown date of first contact, follow-up CT-scans of pulmonary nodules, or neoadjuvant therapy were excluded. In total, 287 patients treated between 2009 and 2017 were included for further analysis. Median time between first suspicious medical imaging and surgical therapy was 62 (range 23–120) days and did not differ between male and female patients. Patients were then classified into two groups according to the duration of the medical work-up: group A up to 60 days, and group B from 61 to 120 days. Clinical T and N stages were comparable between the groups. There was no difference in overall survival between the two groups. In the subgroup of cT2 tumors (87 patients), there was a significant survival benefit for patients in group A (p = 0.043), while nodal stages, stage migration, lymphatic vessel invasion, grading and other potentially survival-influencing clinical parameters were comparable between the groups. Delay between diagnosis and treatment of lung cancer may result in dismal outcome. Efforts need to focus on improving and streamlining patient pathways to shorten the delay until surgical treatment to a minimum. Process improvement might be achieved by stringent interdisciplinary work-up and a patient-centered approach.

OBJECTIVES Recurrent laryngeal nerve (RLN) injury during thoracic surgery may result in life-threatening postoperative complications including recurrent aspiration and pneumonia. Anatomical details of the intrathoracic course are scarce. However, only an in-depth understanding of the anatomy will help reduce nerve injury. The aim of this study was to assess the anatomic variations of the intrathoracic left RLN. METHODS Left-sided vagal nerves and RLN were dissected in 100 consecutive Caucasian cadavers during routine autopsy. Anatomical details were documented. Available demographic data were assessed for possible correlations. RESULTS All nerves were identified during dissection. Variant courses were classified in 3 different groups according to the level at which the RLN separated from the vagal nerve: above the aortic arch, level with the aortic arch and below the aortic arch. We found 11% of RLN separating above the aortic arch and crossing the aortic arch at a considerable distance to the vagal nerve. In 48% of the RLN, the nerve split off when it was level with the aortic arch, and 41% of the RLN leave the vagal nerve in a perpendicular direction below the aortic arch. All nerves crossed the ligamentum arteriosum on the posterior side. No gender-specific differences were observed. CONCLUSIONS Mediastinal lymph node dissection in left-sided lung cancer patients puts the RLN at risk. With more detailed anatomical knowledge about its course, it is possible to avoid risking the nerve. Visualization will help protect the nerve., Left recurrent laryngeal nerve (L-RLN) palsy is a severe complication following various thoracic surgical procedures.

Carcinoids of the left main bronchus are rare tumors of the bronchial system and patients often present with dyspnea, asthma-like symptoms, and pneumonia. Gold standard for therapy of carcinoids is surgical resection, but the surgical approach for segmental resection and anastomosis of the left main bronchus is a matter of discussion. With a left-sided approach the access to the bronchus is blocked by the aortic arch and the pulmonary vein. If a right-sided approach is performed, the problem of ventilation during resection and anastomosis of the bronchus occurs. We present a surgical approach from the right side using intraoperative extracorporeal membrane oxygenation to assure oxygen supply for resection of a typical carcinoid of the left main stem bronchus, and discuss the current literature.

Background: Postoperative pain after video-assisted thoracoscopic surgery (VATS) affects patients&rsquo, recovery, postoperative complications, and length of stay (LOS). Despite its relevance, there are no guidelines on optimal perioperative pain management. This study aims to analyse the effects of an additional intercostal catheter (ICC) in comparison to a single shot intraoperative intercostal nerve block (SSINB). Methods: All patients receiving an anatomic VATS resection between June 2019 and May 2020 were analysed retrospectively. The ICC cohort included 51 patients, the SSINB cohort included 44 patients. Results: There was no difference in age, gender, comorbidities, or duration of surgery between cohorts. Pain scores on the first postoperative day, after chest drain removal, and highest pain score measured did not differ between groups. The overall amount of opioids (morphine equivalent: 3.034 mg vs. 7.727 mg, p = 0.002) as well as the duration of opioid usage (0.59 days vs. 1.25 days, p = 0.005) was significantly less in the ICC cohort. There was no difference in chest drain duration, postoperative complications, and postoperative LOS. Conclusions: Pain management with ICC reduces the amount of opioids and number of days with opioids patients require to achieve sufficient analgesia. In conclusion, ICC is an effective regional anaesthesia tool in postoperative pain management in minimally invasive thoracic surgery.

Introduction Surgical treatment of primary spontaneous pneumothorax (PSP) usually consists of bullectomy and any form of pleurodesis to reduce risk of disease recurrence. Whether pleurectomy is superior to pleural abrasion is still a matter of debate with recurrence rates especially high when performed with a video-assisted thoracoscopic (VATS) approach. Aim of this study was to compare the efficacy of the two methods in prevention of recurrence of pneumothorax in a minimally invasive setting. Materials and methods Between 01/2005 and 12/2015, 107 patients younger than 40 years with PSP underwent VATS bullectomy and either partial pleurectomy or pleural abrasion. Medical records of patients were reviewed retrospectively. Results Pleural abrasion was performed in 34/107 patients, 73/107 patients underwent partial pleurectomy. There were no statistically significant differences in age, sex, body mass index or smoking history at time of surgery. There was no significant difference in major postoperative complications (p = 0.3022). Nine (8.4%) patients had a recurrence of pneumothorax during follow-up. Incidence of recurrence in those undergoing pleural abrasion was significantly higher than those undergoing apical pleurectomy (8/34 vs. 1/73, p

OBJECTIVES Our goal was to report the results of the first consensus paper among international experts in uniportal video-assisted thoracoscopic surgery (UniVATS) lobectomy obtained through a Delphi process, the objective of which was to define and standardize the main procedural steps, optimize its indications and perioperative management and identify elements to assist in future training. METHODS The 40 members of the working group were convened and organized on a voluntary basis by the Uniportal VATS Interest Group (UVIG) of the European Society of Thoracic Surgeons (ESTS). An e-consensus finding exercise using the Delphi method was applied to require 75% agreement for reaching consensus on each question. Repeated iterations of anonymous voting continued for 3 rounds. RESULTS Overall, 31 international experts from 18 countries completed all 3 rounds of questionnaires. Although a technical quorum was not achieved, most of the responders agreed that the maximum size of a UniVATS incision should be ≤4 cm. Agreement was reached on many points outlining the currently accepted definition of a UniVATS lobectomy, its indications and contraindications, perioperative clinical management and recommendations for training and future research directions. CONCLUSIONS The UVIG Consensus Report stated that UniVATS offers a valid alternative to standard VATS techniques. Only longer follow-up and randomized controlled studies will predict whether UniVATS represents a valid alternative approach to multiport VATS for major lung resections or whether it should be performed only in selected cases and by selected centres. The next step for the ESTS UVIG is the establishment of a UniVATS section inside the ESTS databases.

To analyze causes, predictors and consequences of conversions from intended VATS lobectomy to open surgery. This is a retrospective analysis of a prospectively maintained database. From 2009 until December 2012, 232 patients were scheduled for anatomical VATS resection. Conversion to open surgery was necessary in 15 (6.5 %) patients. Reasons for conversion were bleeding in six, oncologic in five and technical in four patients (adhesions after pleuritis or radiotherapy for other tumors: 3; limited space: 1). In a univariable exact logistic regression analysis, conversion rate was significantly higher in patients after induction therapy (p = 0.019). There was also a statistical trend to a higher conversion rate in patients with larger tumor size (

The aim of this study was to explore intraoperative complications during video-assisted thoracoscopic surgery (VATS) lobectomy. Vascular and bronchial injuries, after a robust learning curve, can be sometimes successfully managed by VATS. During a VATS lobectomy, it is necessary: to be prepared in potentially dangerous situations; to think about strategies to handle intraoperative complications and to share these strategies with your own staff. Herein we present some videos showing cases where vascular injuries led to conversion and others where a minimally-invasive trouble shooting of intraoperative complications was achieved.

Hintergrund: Die akkurate praoperative Stadieneinteilung ist Grundlage fur die Therapieplanung beim Bronchialkarzinom. Grunde fur eine postoperative Stadienmigration konnen entweder in der Qualitat des klinischen Stagings oder in der Qualitat der onkologischen Radikalitat liegen. Ziel der Studie ist es, Risikofaktoren fur eine Stadienmigration zu definieren. Material und Methode: Retrospektive Evaluierung einer prospektiv gefuhrten Datenbank. Zwischen 2009 und 2015 wurden 441 Patienten wegen eines Bronchialkarzinoms mittels minimal-invasiver Technik anatomisch reseziert. Alle Patienten wurden mittels PET/CT untersucht. Eine invasive Abklarung der mediastinalen Lymphknoten wurde bei vergroserten oder PET-positiven mediastinalen Lymphknoten durchgefuhrt. Tumore wurden unterteilt in zentrale oder periphere Lokalisation, wobei zentral als sichtbar in der Bronchoskopie oder Kontakt im CT mit dem Segmentbronchus definiert wurde. Ergebnis: Bei 284 Patienten lag ein klinisch nodal negatives Stadium vor (cT1a-cT3N0). Histologisch wurde bei 29 (10,2%) Patienten ein N1 Befall und bei 23 (8,1%) Patienten ein N2 Befall diagnostiziert. Eine statistisch signifikante Korrelation fur eine Stadienmigration konnte fur keinen klinischen Parameter (Histologie, Alter, Geschlecht, Tumor-Grading, zentral vs. peripher) gefunden werden. Als Trend fur eine Korrelation fand sich lediglich die Tumorgrose (pT1 vs. >pT1, p = 0,057). Schlussfolgerung: Im Vergleich mit der rezenten Literatur zeigt sich an unserem Patientenkollektiv ein hoher Anteil an Stadienmigration hin zu hoheren Lymphknotenstadien, auch bei minimal-invasivem Zugang. Derzeit existiert kein eindeutiger klinischer Risikofaktor fur eine Stadienmigration, sodass selbst bei bildgebend freiem Mediastinum eine mediastinale Lymphknotendissektion durchgefuhrt werden sollte. Bei primar nicht-chirurgischem Therapieansatz (Stereotaxie) wurden fast 20% der Patienten nicht stadiengerecht therapiert werden.

BACKGROUND: Accurate patient selection is crucial when initiating a VATS (Video Assisted Thoracoscopic Surgery) lobectomy program. Benign and malignant indications comprise different technical problems: while tumor stage and location determine feasibility in malignant cases, severity of adhesions and size and consistency of hilar lymph nodes are limiting factors in benign diseases. METHODS: Based on a retrospective analysis of prospectively collected data on the initial 81 patients, the institutional experience of a recently introduced VATS-lobectomy program with regard to patient selection, lobe-specific technique, and short- (mid-) term results is presented. RESULTS: Stage I non-small cell lung cancer and small intralobar aspergilloma are ideal indications to start a VATS lobectomy program. Conversion rate, mortality rate, major and minor complication rate, and median hospital stay in the study group was 11%, 3%, 5% and 12%, and 9 days, respectively. After a follow-up of median 8 months, 93% of patients with malignant disease have no local or distant tumor recurrence. CONCLUSIONS: Appropriate preoperative workup and careful patient selection are important to keep conversion rate low and morbidity and mortality rates comparable to open surgery. With increasing experience and confidence a stepwise expansion of benign and malignant indications may be considered.

In the last decade an increasing, more and more widespread use of video-assisted thoracic surgery (VATS) anatomical lung resections has become a standard primary operative procedure in many thoracic units worldwide, especially in high volume centers.

The aim of the present study was to analyze feasibility, morbidity, mortality, and oncologic outcome of extended video-assisted thoracoscopic surgery (VATS) anatomic lung resections in a single-center experience. Extended resections include bilobectomies, bronchoplasties, and pneumonectomies. The present study is a retrospective analysis of a prospectively maintained institutional database. Between 2009 and 2014, 390 patients were scheduled for anatomical VATS resections. VATS resection was completed in 370 patients giving an overall conversion rate of 5.1 %. Extended VATS resections were performed in 29 patients (7.8 %): bilobectomy in 8, bronchoplastic resection in 15 (2 bronchial sleeve resections, 11 wedge bronchoplasties, 2 simple bronchoplasties), and pneumonectomy in 6. Median operative time was 217 min (117–390 min). Median chest tube duration was 4 days (range, 2–50 days). Median length of hospital stay was 9 days (6–63 days). There was no in-hospital mortality. Major complications with need for reinterventions occurred in three patients (10.3 %): one air leakage from bronchial stump after pneumonectomy, one hematothorax after completion pneumonectomy, and one chylothorax. All complications were treated with VATS procedures. Minor complications included two persistent air leaks that were treated with an additional chest drain and resolved, one urinary tract infection, one atelectasis with need for bronchoscopy, and one pleural fluid collection with the need for drainage. After a median follow-up of 26 months, no local tumor recurrence occurred. Two patients had a second lung primary cancer and four patients with advanced tumor stages had distant recurrent disease. With growing experience, extended VATS resections are feasible in selected cases with low perioperative morbidity and mortality.

The benefit of robotic systems for general surgery is a matter of debate. We compare our initial series of robotic splenectomies with our first series of conventional laparoscopic ones. A retrospective analysis of the first six robotic versus the first six conventional laparoscopic splenectomies is presented. Patients were matched with regard to age, body-mass index, ASA score, and preoperative platelet levels. All procedures were performed by a single surgeon. Size and weight of the resected specimens were comparable in both groups. Median overall operating time was 154 (range, 115-292) min for the robotic and 127 (range, 95-174) min for the laparoscopic group. No complications occurred. There were no open conversions. The median postoperative hospital stay was 7 (robotic group) and 6 (laparoscopic group) days. Median average costs were 6927 dollars for the robotic procedure versus $4084 for the conventional laparoscopic procedure (p < 0.05). Minimally invasive splenectomies are feasible using either conventional laparoscopic techniques or the da Vinci robotic system. In this analysis, procedures performed with the da Vinci robotic system resulted in prolonged overall operative time and significantly higher procedural costs. The use of a robotic system for laparoscopic splenectomy offers, at this stage, no relevant benefit and thus is not justified.

Minimally invasive video-assisted thoracoscopic surgery (VATS) is considered as an alternative to thoracotomy for early stage lung cancer. Since 2009, we use a VATS approach for all early stage lung tumors as well as benign indications for lung lobectomy. As experience with the technique is growing, indications are expanded. Here, we report our first minimally invasive pneumonectomies of two patients with non-small cell lung cancer (NSCLC). Case 1: A 60-year-old man was diagnosed with a centrally located tumor of the right lung invading all three lobes without any obvious lymph node metastasis in the preoperative work-up. The patient was scheduled for a right-sided VATS pneumonectomy. Case 2: A 62-year-old woman was diagnosed with a centrally located tumor of the left lung with an ipsilateral positron emission tomography (PET) positive lymph node (aortopulmonary window). After neoadjuvant treatment, the patient was scheduled for a left-sided pneumonectomy. Written informed consent was given in both cases. The procedures were completed using three incisions. A complete mediastinal lymph node dissection was performed. The postoperative courses were uneventful. VATS pneumonectomy is feasible in highly selected cases. It offers all advantages known from minimally invasive lung lobectomy with less pain and faster rehabilitation, which might facilitate the delivery of adjuvant treatment.

Breath analysis for the purpose of non-invasive diagnosis of lung cancer has yielded numerous candidate compounds with still questionable clinical relevance. To arrive at suitable volatile organic compounds our approach combined the analysis of different sources: isolated tumor samples compared to healthy lung tissues, and exhaled breath from lung cancer patients and healthy controls. Candidate compounds were further compared to substances previously identified in the comparison of transformed and normal lung epithelial cell lines. For human studies, a breath sampling device was developed enabling automated and CO2-controlled collection of the end-tidal air. All samples were first preconcentrated on multibed sorption tubes and analyzed with gas chromatography mass spectrometry (GC-MS). Significantly (p < 0.05) higher concentrations in all three types of cancer samples studied were observed for ethanol and n-octane. Additional metabolites (inter alia 2-methylpentane, n-hexane) significantly released by lung cancer cells were observed at higher levels in cancer lung tissues and breath samples (compared to respective healthy controls) with statistical significance (p < 0.05) only in breath samples. The results obtained confirmed the cancer-related origin of volatile metabolites, e.g. ethanol and octane that were both detected at significantly (p < 0.05) elevated concentrations in all three kinds of cancer samples studied. This work is an important step towards identification of volatile breath markers of lung cancer through the demonstration of cancer-related origin of certain volatile metabolites.

Background . The value of bronchoscopic sealing of bronchopleural fistulas was studied retrospectively. Methods . The cases of 45 patients seen between 1983 and 1996 with bronchopleural fistula after pneumonectomy (40 patients) or lobectomy (5 patients) were reviewed. Age, underlying disease, side, fistula size (millimeters) at initial bronchoscopy, survival (days) after endoscopic treatment, mode and number of endoscopic interventions, interval (days) between operation and fistula occurrence, and pathologic TNM stage in the case of malignancy were recorded. On the basis of the therapeutic outcome (cure, death, chronic empyema with closed fistula, or chronic empyema with open fistula) and the modality (successful sealing or bronchoscopic failure with subsequent surgical intervention), various groups were assessed and compared. Results . Of 29 patients (64%) treated only endoscopically, 9 were cured. Seven patients had fistula closure, but persistent chronic empyema necessitated permanent drainage. In another 7 patients, the fistula remained open and also was controlled by permanent drainage. Six patients in this group died. The overall rate of fistula closure was 35.6% (16 patients), and recurrence occurred in 2 patients. Sixteen patients (35.6%) required surgical intervention because of increasing fistula size (8 patients), sepsis with refractory empyema (7), and fecal empyema (1 patient). Two patients in the surgical group died. Small fistulas ( Conclusions . Bronchoscopic treatment of bronchopleural fistula appears an efficient alternative, especially when surgical intervention cannot be done because of the physical condition of the patient.

Background. Various therapeutic approaches to bronchopleural fistula have been reported. Its natural history, which may be key to the best therapeutic management, early detection, and possibly, prevention of fistula formation, has received little attention. Methods. The cases of 96 patients with bronchopleural fistula after pneumonectomy seen over a 13-year period (1982 to 1995) were retrospectively analyzed. Cancer, TNM stage and histology, age, sex, side and size of the fistula at primary bronchoscopic diagnosis, time of occurrence after operation (days), cause of death, and survival after fistula formation (days) were analyzed. Management consisted of bronchoscopic closure with fibrin sealant or decalcified spongy calf bone or both, repeat thoracotomy with resection of the bronchial stump, thoracoplasty, or open window thoracostomy. Results. Except for one instance, all total stump dehiscences occurred within 90 days after operation. Sixty-four patients (67%) died during the observation period; in 25, the cause of death was aspiration pneumonia. Only 2 patients who died of aspiration pneumonia had development of a fistula after 90 postoperative days. The aspiration rate dropped with increasing interval between operation and fistula occurrence ( p = 0.000). Patient survival after fistula formation was positively correlated to this interval ( p = 0.002). Successful fistula closure was achieved by surgical intervention in 21 patients and endoscopically in 11 patients. The overall postoperative mortality rate irrespective of treatment method was 31%. Conclusions. The incidence of aspiration pneumonia declines sharply if bronchopleural fistula occurs more than 3 months after operation. Formation of fibrothorax apparently represents a natural protection against fistula formation and subsequent fatal aspiration pneumonia. Close follow-up during the first 3 postoperative months should detect bronchopleural fistula before aspiration occurs.

We report our first series of minimally invasive splenectomies with a robotic surgical system.From August 2001 to October 2003, laparoscopic splenectomies with the da Vinci operating robot were performed in 7 patients (five females and two males, ages 20 to 74 years).Indications for splenectomy were hematologic disorders in four patients and hypersplenism in three patients. Median dimensions of the resected spleens were 140 +/- 34 mm x 80 +/- 11 mm x 50 +/- 17 mm and median weight was 307 +/- 193 g. Median total operative time was 147 +/- 58 minutes including 107 +/- 49 minutes for the robotic act. There were no intraoperative complications and no conversions to open surgery. The median postoperative hospital stay was 7 days.This first series suggests that robotic splenectomy with the da Vinci surgical system is technically feasible and safe. It provides an alternative to the conventional laparoscopic procedure. Nevertheless, justification for this new technique will require a larger prospective series and longer follow-up.

Background Robotic surgical systems are most effective for operations in areas that are small and difficult to reach. Ideal indications for this new technology have yet to be established. The esophagus possesses attributes that are interesting for general thoracic robotic surgeons. Methods Robotic-assisted thoracoscopic surgery (RATS) using the da Vinci system (Intuitive Surgical, Inc, Mountain View, CA) was performed in six patients with esophageal tumors. This comprised the dissection of the intrathoracic esophagus including lymph node dissection in four patients suffering from esophageal cancer and the extirpation of a benign lesion (one leiomyoma and one foregut cyst) in the remaining two patients. Results All procedures were completed successfully with the robot. The median overall operating time was 173 (160–190) minutes in the oncologic cases and 121 minutes in the benign cases, including the robotic act of 147 (135–160) minutes and 94 minutes, respectively. There were no intraoperative complications. One patient had to undergo a redo thoracoscopy because of a persistent lymph fistula. One cancer patient died after 12 months due to tumor progression and another patient had to be stented due to local tumor recurrence 19 months postoperatively. Conclusions This first small series of various esophageal pathologies treated by robotic-assisted thoracoscopic surgery supports the impression that the esophagus is an ideal organ for a robotic approach. The potential of the da Vinci system, especially for oncologic indications, remains to be proven in future clinical trials.

The benefit of robotic systems for general surgery is a matter of debate. We compare our initial series of robotic splenectomies with our first series of conventional laparoscopic ones. A retrospective analysis of the first six robotic versus the first six conventional laparoscopic splenectomies is presented. Patients were matched with regard to age, body-mass index, ASA score, and preoperative platelet levels. All procedures were performed by a single surgeon. Size and weight of the resected specimens were comparable in both groups. Median overall operating time was 154 (range, 115-292) min for the robotic and 127 (range, 95-174) min for the laparoscopic group. No complications occurred. There were no open conversions. The median postoperative hospital stay was 7 (robotic group) and 6 (laparoscopic group) days. Median average costs were $6927 for the robotic procedure versus $4084 for the conventional laparoscopic procedure (p < 0.05). Minimally invasive splenectomies are feasible using either conventional laparoscopic techniques or the da Vinci robotic system. In this analysis, procedures performed with the da Vinci robotic system resulted in prolonged overall operative time and significantly higher procedural costs. The use of a robotic system for laparoscopic splenectomy offers, at this stage, no relevant benefit and thus is not justified.

A unilateral surgical approach in patients with primary hyperparathyroidism (HPTH) requires a reliable preoperative parathyroid localization procedure. The aim of this study was to compare the approved planar scintiscanning by means of 99mTcO4−201Tl subtraction or 99mTc-sestamibi with 99mTcO4−201Tl pinhole subtraction SPECT. Fifty patients with primary HPTH and preoperative localization diagnosis were retrospectively analyzed. Thirty-three of them underwent preoperative planar scintiscanning with 99mTcO4−201Tl subtraction or 99mTc-sestamibi, 17 had 99mTcO4−201Tl pinhole subtraction SPECT. Planar scintiscanning had an overall accuracy of 81.8%, 99mTcO4−201Tl pinhole subtraction SPECT of 81.3%. In patients with solitary parathyroid adenomas the planar scintiscanning provided correct results in 86.7%, whereas 99mTcO4−201Tl pinhole subtraction SPECT had an accuracy of 93.3% in these patients. Concomitant thyroid nodules diminished the accuracy of planar scanning to 78.6%. The accuracy of 99mTcO4−201Tl pinhole subtraction SPECT was not diminished by multinodular goiter, all patients with solitary parathyroid adenomas and multinodular thyroid disease were accurately localized. The sensitivity of 99mTcO4−201Tl pinhole subtraction SPECT is statistically not significantly different compared with planar 99mTcO4−201Tl subtraction or 99mTc-sestamibi scintiscanning in patients with HPTH and solitary adenomas. Therefore, it is concluded that both imaging procedures are comparable in their diagnostic value for preoperative localization for successful unilateral parathyroidectomy. Although the results are not significantly different because of the number of patients, it is concluded 99mTcO4−201Tl pinhole subtraction SPECT to be superior to planar scintiscanning in patients with underlying multinodular thyroid pathology.