Prognostic significance of mediastinal standardized uptake value on positron emission tomography/computed tomography in patients with left upper lobe non-small cell lung cancer: Is invasive staging of aortopulmonary window lymph nodes necessary?

Background: This study aims to investigate whether the invasive staging of aortopulmonary window lymph nodes could be omitted in the presence of a suspected isolated metastasis in the aortopulmonary window lymph node on positron emission tomography/computed tomography. Methods: Between January 2010 and January 2016, a total of 67 patients (54 males, 13 females; mean age: 59.9±8.7 years; range, 44 to 76 years) with metastatic left upper lobe tumors to aortopulmonary window lymph nodes were retrospectively analyzed. According to positron emission tomography/computed tomography findings in clinical staging, the patients were classified as positive (+) (n=33) and negative (-) (n=34) groups. Results: There was a statistically significant difference between the two groups in terms of sex distribution, lymph node diameter on computed tomography, maximum standardized uptake value of aortopulmonary window lymph nodes, and tumor diameter (p<0.001 for all). A trend toward significance was found to be in pT status, LN #6 metastases, and pathological stage between the two groups (p=0.067). The five-year overall survival rate for all patients was 42.4% and there was no significant difference between the groups (p=0.896). The maximum standardized uptake value of the aortopulmonary window lymph nodes was a poor prognostic factor for survival (area under the curve=0.533, 95% confidence interval: 0.407-0.675, p=0.648). Conclusion: Invasive staging of aortopulmonary window lymph nodes can be omitted in patients with isolated suspected metastasis to aortopulmonary window lymph nodes in non-small cell lung cancer of the left upper lobe.

Survival Effect of Surgery in Patients with Stage IIIB/N2 Non-small Cell Lung Cancer: A Comparative Study with Definitive Chemoradiotherapy.

OBJECTIVE: We compared the survival outcomes of surgery within multimodality treatment regimens with the outcomes of definitive chemoradiation treatments in patients diagnosed with clinical (c) IIIB/N2 non-small cell lung cancer (NSCLC). We investigated whether surgery within multimodality treatment provides a survival advantage at this stage. MATERIAL AND METHODS: Data from 79 patients with cIIIB/N2 between 2009 and 2016 were analyzed retrospectively. While the surgery was performed after neoadjuvant therapy in 51 cases (IIIB/Surgery Group), definitive chemotherapy ± radiotherapy was applied in 28 cases (IIIB/Definitive Group). RESULTS: In cIIIB/N2 cases, the 5-year overall survival (OS) was 27.4%, with a median OS of 24.6 months. The 5-year OS of the IIIB/ Surgery Group was 27.3% (median survival 22.5 months), while it was 28.6% (median survival 29.1 months) in the IIIB/Definitive Group (P = .387, HR = 0.798, 95% CI, 0.485-1.313). Although there was a survival advantage in the group with a pathological complete response (PCR) after surgery (n = 14) compared to the group that did not (n = 37), the observed difference was not statistically significant. (5-year OS; 42.9% vs. 18.5%, P = .104). Additionally, there was no statistically significant difference between the survival of PCR patients and the IIIB/Definitive Group in terms of OS (P = .488). CONCLUSION: Surgery performed within multimodality treatment regimens in selected cIIIB/N2 cases did not provide a survival advantage over definitive chemoradiation treatments.

Evaluation of Early Results Video-Assisted Thoracoscopic Surgery with Multi-Joint Wristed Instruments in Lung Cancer Surgery.

Background: Our objective in this study is to compare the early outcomes of patients who underwent technical resection of non-small cell lung cancer (NSCLC) with video-assisted thoracoscopic surgery (VATS) with multi-joint wristed instruments, also known as surgeon-powered robotic surgery (SpRS) and conventional VATS. Methods: One hundred twenty-two thoracoscopic lung resections were performed in our hospital for NSCLC between March 2021 and March 2022. Of these resections, 95 were performed with VATS, while 27 patients underwent the SpRS technique. Results: Lobectomy was performed in 112 patients (91.8%), and segmentectomy was performed in 10 patients (8.2%). The median duration of hospitalization was 5 days in patients who underwent VATS, while the median duration of hospitalization was 4 days in patients who underwent the SpRS technique. No significant difference was found between the groups when demographic characteristics were compared with surgical techniques. The median drainage was 125 mL in the SpRS technique, while 150 mL of drainage occurred in patients who underwent resection by VATS (0.165). While an average of 12 lymph nodes was dissected in the VATS group, an average of 14 lymph nodes was dissected in the SpRS group (0.602). Complications occurred in 17 patients (13.9%). Complications were observed at a rate of 16.8% in the VATS group, while complications were observed at a rate of 3.7% in the SpRS group (P = .116). Conclusion: As a result, our study shows that it is an effective and reliable method with early results similar to thoracoscopic surgery. Registration Number: 2022-194.

Survival impact of unexpected N2 in stage IIIB/N2 non-small cell lung cancer patients.

BACKGROUND: We investigated the effect of unexpected N2 on survival in stage IIIB/N2 cases. METHODS: We retrospectively analyzed 1803 non-small cell lung cancer patients between 2010 and 2016. There were 89 patients (4.9%) with unexpected N2 (pathological (p) IIIB/N2 group), whereas 49 patients (2.7%) with cN2 (clinical (c) IIIB/N2 group). Although pIIIB/N2 group underwent surgery followed by adjuvant therapy, the cIIIB/N2 group of patients had multimodality treatment including induction chemotherapy ± radiotherapy followed by surgery. RESULTS: The five-year overall survival (OS) for all patients was 36.0% [median survival time (MST) 27.9 months], and disease-free survival (DFS) was 28.9% (MST, 18.2 months). The OS was 39.6% (MST: 34.4 months) and the median DFS time was 31.1% (Median: 23.1 months) in the pIIIB/N2 group, whereas it was 29.2% (MST: 23.0 months) for OS and 22% (median: 12.4 months) for DFS in the cIIIB/N2 group. There were no significant OS and DFS differences between the pIIIB/N2 group and the cIIIB/N2 group (p = 0.124 and p = 0.168, respectively). CONCLUSIONS: In stage IIIB/N2 cases, the fact that N2 could not be detected preoperatively with minimally invasive or invasive methods and was detected in the pathological examination after surgery does not provide a survival advantage.

The effect of lymph node ratio on survival in non-small-cell lung cancer.

BACKGROUND: The aim of this study was to evaluate the effect of prognostic factors and lymph node ratio (LNR) on survival in patients with resected non-small-cell lung cancer (NSCLC). METHODS: Data from 421 patients with NSCLC who underwent complete resection between 2009 and 2015 were evaluated retrospectively. LNR was defined as the ratio of positive lymph nodes to the total number of lymph nodes removed. Associations between overall survival (OS) and LNR, node (N) status, and histopathologic status were evaluated. RESULTS: The 5-year survival rate was 42.5% among all patients and 26.6% for patients aged 65 years or older. In the multivariate analysis, age ≥65 years, advanced-stage disease, non-squamous cell carcinomas, pN status, and having multiple-station pN2 and multiple-station pN1 disease were found to be poor prognostic factors (p < 0.05). There was no statistical difference in survival between patients with LNR (hazard ratio: 1.04, p = 0.45). CONCLUSION: The results of our study indicate that pN stage, histopathologic type, pT stage, and geriatric age were the most important poor prognostic factors associated with survival after NSCLC resection. Although LNR is a factor associated with survival in gastrointestinal cancers, it did not impact survival in our study.

Comparison of short-term results of subxiphoid and conventional video-assisted thoracoscopic surgery in diagnostic wedge resections.

BACKGROUND: This study aimed to compare early results in patients who underwent subxiphoid wedge resection with those operated on using a multiportal approach. METHODS: We retrospectively evaluated 151 patients who underwent diagnostic wedge resection for suspected interstitial lung disease. Patients who underwent wedge resection via subxiphoid video-assisted thoracoscopic surgery and conventional video-assisted thoracoscopic surgery were compared. RESULTS: The study included 90 men (59.6%) and 61 women (40.4%) with a mean age of 54.8 ± 12 years. Of these, 127 patients underwent conventional video-assisted thoracoscopic surgery and 24 patients underwent subxiphoid video-assisted thoracoscopic surgery. Postoperative complications occurred in 13 patients (8.6%), with no significant difference according to surgical technique. Sex was a significant factor in the rate of complications (12.2% in men vs. 3.2% in women). There was no intraoperative mortality; the 30-day mortality rate was 4% (n = 6). Five nonsurviving patients were in the conventional video-assisted thoracoscopic surgery group and 1 was in the subxiphoid video-assisted thoracoscopic surgery group (p = 0.95). CONCLUSION: The results of this study indicate that the subxiphoid approach reduced procedure time and length of hospital stay in the early period, while there was no significant difference between the techniques in terms of complications or mortality. Based on these findings, we conclude that surgical outcomes were as successful with the subxiphoid approach as with conventional video-assisted thoracoscopic surgery.

Comparison of 6th, 7th, and 8th editions of the TNM staging in non-small cell lung cancer patients: Validation of the 8th edition of TNM staging.

Background: In this study, we aimed to evaluate the effects of the transition from the 6th edition of the Tumor, Node, Metastasis (TNM) staging system to the 7th edition, and from the 7th edition to the 8th edition by comparing the stage migrations. We also aimed to externally validate the 8th edition of the TNM staging system. Methods: Between September 2005 and June 2015, a total of 1,077 patients (986 males, 91 females; mean age: 59.6±8.3 years; range, 35 to 84 years) with non-small cell lung cancer who underwent lung resection were retrospectively analyzed. We re-staged patients according to 6th, 7th, and 8th TNM staging and compared the stage migrations of cases among the three staging systems. Results: Stage migration in the transition to the 7th edition of the TNM staging system was observed in 368 (34.1%) patients whereas it was observed in 541 (50.2%) patients in the transition to the 8th edition (p<0.001). The rate of upstaging in transition to the 7th edition staging system was 50.2% (n=185), whereas it was 98.1% (n=531) for the transition to the 8th edition (p<0.001). The survival rates of Stages 1B, 2B and 3A increased with transition to the 7th edition and the survival rates of Stages 1B, 2A, 2B, 3A, and 3B increased with the transition to the 8th edition. The best stratification in the survival curves in the 6th edition was between 1B-1A and 3B-3A. In the 7th edition, it occurred between 1B-1A, 3A-2B and 3B-3A and, in the 8th edition, between 1B-1A and 3B-3A. Conclusion: Stratification according to the 7th edition showed better prognostic validity compared to the 6th edition; and that of the 8th edition was better compared to the 7th edition.

Factors affecting survival after anatomical lung resection in pulmonary aspergilloma: Our 10-year single institution experience.

Background: The aim of this study was to investigate the long-term outcomes of patients who underwent anatomic lung resection for pulmonary aspergilloma and to evaluate the prognostic factors affecting early postoperative morbidity. Methods: Between January 2007 and January 2017, we retrospectively evaluated a total of 55 patients (40 males, 15 females; mean age: 44.6 years; range, 18 to 75 years) who underwent lobectomy and pneumonectomy for pulmonary aspergilloma. All patients were evaluated for simple or complex aspergilloma based on imaging and thoracotomy findings. Results: Thirty-two (58.2%) patients presented with hemoptysis. Seven (12.7%) patients underwent emergency surgery due to massive hemoptysis. Postoperative morbidity was observed in 15 (27.3%) patients. Prognostic factors that had an effect on morbidity were resection type, Charlson Comorbidity Index >3, and massive hemoptysis (p<0.05). There was no intra- or postoperative mortality. The five-year survival rate was 89.4%. None of the factors evaluated in the study were associated with survival. Conclusion: The main finding of this study is the absence of mortality after surgical treatment for pulmonary aspergilloma. The success of surgical treatment depends on the management of postoperative complications.

Did primary spontaneous pneumomediastinum risk factor alter in the period of COVID-19 pandemia?

OBJECTIVES: In this study, we aimed to establish risk factors for primary spontaneous pneumomediastinum associated with Coronavirus disease 2019 (COVID-19) and reveal those which are significant. METHODS: The study included 62 patients with primary spontaneous pneumomediastinum who presented to our hospital between 11 March 2020, the date of the first-reported COVID-19 case in our country, and 3 January 2021. Of these, 14 patients (22.6%) had COVID-19 and 48 patients (77.4%) did not have COVID-19. RESULTS: Of the 62 patients included in the study, 41 (66.1%) were male and 21 (33.9%) were female. The mean age was 28.90 ± 16.86 (range, 16-84) years. The most common symptom at admission was chest pain (54.8%). The mean age of the patients with COVID-19 was 39.35 ± 23.04 years and that of the patients without COVID-19 was 25.85 ± 13.45 years (P < 0.001). In receiver-operating characteristic curve analysis, the area under the curve for age was 0.785 (95% confidence interval: 0.648-0.922) and the optimal cut-off value was 24 years for COVID-19-positive patients. The highest sensitivity and specificity values were 0.857 and 0.729. Twelve (85.79%) of the COVID-19-positive primary spontaneous pneumomediastinum patients were aged 24 years or older (P < 0.001). Five patients (8.1%) had positive severe acute respiratory syndrome coronavirus 2 polymerase chain reaction test but no abnormal findings on computed tomography. CONCLUSIONS: Having an age of more than 24 years was associated with a higher prevalence of pneumomediastinum in COVID-19 patients and emerged as an important risk factor. Multicentre studies with more cases are needed to determine whether pneumomediastinum is associated with additional other risk factors related to COVID-19.

Evaluation of prognostic factors in lung cancers with surgical complete response after induction treatment.

BACKGROUND: This study aims to evaluate long-term results of induction treatment and to investigate prognostic factors affecting survival in non-small cell lung cancer patients with a pathological complete response. METHODS: Between January 2010 and December 2017, a total of 39 patients (38 males, 1 female; mean age: 56.2±8.3 years; range, 38 to 77 years) having locally advanced (IIIA-IIIB) non-small cell lung cancer who were given induction treatment and underwent surgery after induction treatment and had a pathological complete response were retrospectively analyzed. Survival rates of the patients and prognostic factors of survival were analyzed. RESULTS: Clinical staging before induction treatment revealed Stage IIB, IIIA, and IIIB disease in three (7.7%), 26 (66.7%), and 10 (25.6%) patients, respectively. The five-year overall survival rate was 61.2%, and the disease-free survival rate was 55.1%. In nine (23.1%) patients, local and distant recurrences were detected in the postoperative period. CONCLUSION: In patients with locally advanced non-small cell lung cancer undergoing surgery after induction treatment, the rates of pathological complete response are at considerable levels. In these patients, the five-year overall survival is quite satisfactory and the most important prognostic factor affecting overall survival is the presence of single-station N2.

Comparison of Thoracic Epidural and Intravenous Analgesia from the Perspective of Recovery of Respiratory Function in the Early Post-Thoracotomy Period in Lung Cancer Surgery.

OBJECTIVE: Thoracic epidural analgesia (TEA) reduces pulmonary complications after thoracotomy. Hypothetically, this advantage is partially because of the preserved pulmonary function, which is achieved by the reduction of postoperative pain and immobility. This study aimed to compare the principal methods of analgesia through early postoperative spirometric performance and gas exchange parameters after elective lung cancer surgery. TEA or intravenous analgesia (IVA) involving pethidine was used as the principal method in our sample population. MATERIAL AND METHODS: A total of 62 patients operated via the posterolateral thoracotomy approach were enrolled. Postoperative analgesia was secured using multimodal analgesia with either TEA with 0.1% bupivacaine or IVA. Pain perception was assessed with the visual analog scale (VAS) while at rest and on coughing. Arterial blood samples were collected at 1, 24, and 72 hours postoperatively. Preoperative and third postoperative day spirometric measurements were recorded. RESULTS: There were no significant differences among the groups in terms of demographic characteristics, properties of surgical technique, and disease-associated conditions. VAS scores of the TEA group were lower at the 72-hour follow-up, but a considerable fraction of these differences did not reach statistical significance. Reduction in the forced expiratory volume in the first second and forced vital capacities was more prominent in the IVA group on the third postoperative day, but these were not statistically significant either. Oxygenation parameters favored TEA but remained comparable. Finally, the pH values were significantly lower in the IVA group at 1 and 72 hours postoperatively (p=0.008 and p=0.02, respectively). CONCLUSION: We believe that TEA is advantageous over IVA with alteration of respiratory volumes during the early postoperative period.

Evaluation of factors affecting morbidity and mortality in pneumonectomy patients.

BACKGROUND: The aim of this study was to evaluate risk factors associated with morbidity and mortality after pneumonectomy in non-small cell lung cancer patients. METHODS: The study included 107 patients who underwent pneumonectomy for non-small cell lung cancer between January 2013 and December 2018. Prognostic factors affecting mortality and morbidity were investigated. RESULTS: The patient group included 10 women (9.3%) and 97 men (90.7%) with a mean age of 59.5 ± 8.5 years. Seventy-three patients (68.2%) underwent standard pneumonectomy and 34 (31.8%) underwent extended pneumonectomy. Nine patients (8.4%) received induction chemotherapy. Complications occurred in 33 patients (30.8%). Complications were classified as surgical, cardiovascular, pulmonary, or infectious. Charlson Comorbidity Index (CCI) > 3 and right-side resection were significant risk factors for the development of complications. The most common complication was atrial fibrillation. Eleven patients developed a bronchopleural fistula. The 30-day postoperative mortality rate was 6.5% (n = 7). Mortality was not associated with any demographic and surgical characteristics other than CCI > 3 (p = .05). CONCLUSION: The results of this study indicate that our pneumonectomy outcomes are acceptable despite high morbidity and mortality rates. Appropriate patient selection for pneumonectomy is as important as complication management. High-comorbidity patients should undergo these procedures in experienced centers.

Prognostic Factors and Long-Term Results in Patients Who Underwent Videothoracoscopic Bronchogenic Cyst Excision.

BACKGROUND: Our aim in this study was to compare the results of video-assisted thoracoscopic surgery with those of open surgery regarding efficacy, morbidity, and long-term recurrence of bronchogenic cysts in light of the literature. METHODS: This study comprises the data of 51 patients whose pathological diagnosis revealed bronchogenic cyst after surgical excision between January 2010 and December 2016. There were two groups according to the type of resection: video-assisted thoracoscopic surgery (VATS) and thoracotomy. RESULTS: Of the patients included in the study, 25 (49%) were male and 26 (51%) were female. Their average age was 41.7 ± 14.1 years. While 14 patients (27.5%) were asymptomatic in the preoperative period, 37 patients (72.5%) had symptoms. The Charlson Comorbidity Index was 0 in 35 patients (68.6%) and 1 and above in 16 patients (31.4%). While 22 (43.1%) patients underwent cyst excision via VATS, 29 (56.9%) patients underwent thoracotomy. The average length of hospital stay was 1.77 ± 0.68 days for patients who had VATS, whereas it was 3.82 ± 3.3 days for patients who had thoracotomy (p <0.001). CONCLUSION: VATS procedure is a safe method in the surgical treatment of bronchogenic cysts, with less hospitalization and similar recurrence rates.

Evaluating Giant Hydatid Cysts: Factors Affecting Mortality and Morbidity.

OBJECTIVE: The aim of this study was to evaluate the prognostic factors affecting morbidity and mortality among patients who underwent surgery for giant pulmonary hydatid cysts in our center. METHODS: Data from 283 patients who underwent surgery in our center for pulmonary hydatid cyst between 2008 and 2018 were retrospectively analyzed. Cysts 10 cm in diameter or larger were considered giant hydatid cysts. RESULTS: There were 145 women (51.2%) and 138 men (48.8%). Giant cyst (≥10 cm) was present in 57 patients (20.1%), while the other 226 patients (79.9%) had cysts smaller than 10 cm. Operations were performed using videothoracoscopic approach in 68 patients (24%) and with thoracotomy in 215 patients (76%). Hydatid cysts were on the left side in 129 patients (45.6%), on the right side in 143 patients (50.5%), and bilateral in 11 patients (3.9%). Postoperative morbidity occurred in 29 patients (10.2%). Use of videothoracoscopic surgical approach did not affect morbidity. The mortality rate within the first 90 days was 0.35% (n = 1). CONCLUSION: Giant cysts are more common in the young age group than in older adults. Regardless of cyst size, surgery should be performed as soon as possible after diagnosis to avoid potential complications.

Comparison of the Video-assisted Thoracoscopic Lobectomy versus Open Thoracotomy for Primary Non-Small Cell Lung Cancer: Single Cohort Study with 269 Cases.

OBJECTIVES: This study aims to compare the outcomes of video-assisted thoracoscopic surgery (VATS) lobectomy with open thoracotomy lobectomy in patients with non-small cell lung cancer (NSCLC). METHODS: There were 269 cases with NSCLC who underwent lobectomy between 2017-2019; these cases were retrospectively studied. VATS lobectomy (VATS Group) and open thoracotomy lobectomy (Thoracotomy Group) patients' results were compared according to the length of hospitalizations, early postoperative complications and tumor size and stages. RESULTS: VATS lobectomy was performed in 89 (33%) of these patients, whereas 180 (67%) patients underwent lobectomy using open thoracotomy for NSCLC. The findings showed that the average length of hospitalization was shorter in the VATS Group compared to the Thoracotomy Group (4 vs. 5.5 days) (p<0.05). It was found that the mean size of the tumour was smaller in the VATS Group when compared to the Thoracotomy Group (2.66 cm vs 3.97 cm) (p<0.001). Early postoperative complications were lower in the VATS Group (n=15, 16.8% vs n=58, 32.2%; p<0.021). CONCLUSION: In VATS lobectomy cases, postoperative complications are less, and the length of hospitalization is shorter. VATS lobectomy is mostly preferred smaller than 3 cm tumor size.

Is there any relationship between quality of life and the level of sympathectomy in primary palmar hyperhidrosis? Single-center experience.

BACKGROUND: The discussions at the surgical levels (sympathectomy levels) about endoscopic thoracic sympathectomy (ETS) method, which is applied in hyperhidrosis treatment in the present day and acknowledged as the golden treatment method, continue. Mainly, most of the studies evaluates postoperative early period results. Our aim in this study is to compare the long-term quality of life depending on the different surgical levels (sympathectomy levels) and evaluate the postoperative complications. METHODS: 165 patients operated due to palmar hyperhidrosis between January 2012 and July 2017 were evaluated. Sympathectomy was performed either by clipping or cauterization and sympathetic nerves included were T2-4, T3-4, or T3 levels. Data were retrospectively reviewed for complications, factors affecting the postoperative quality of life. RESULTS: Ninety of the patients were male (54.5%) and 75 (45.5%) were female. The level of ganglion block was T2-T4 in 62 patients (37.6%), T3-T4 in 46 patients (27.9%), and T3 in 57 patients (34.5%). Early complications were observed in 27 patients (16.4%). Compensatory hyperhidrosis (CH) was observed in 62 patients (37.6%). There was a significant difference in the postoperative quality of life according to ETS level (p < 0.001). Patients who underwent T2-T4 sympathectomy had a lower quality of life than patients who underwent isolated T3 or T3-T4 sympathectomy. CONCLUSION: Based on our results, we recommend performing lower level resections to increase the long-term quality of life in palmar hyperhidrosis patients. The lower risk of CH and comparable quality of life suggest that T3 sympathectomy is more effective.

Unexpected conversion to thoracotomy during thoracoscopic lobectomy: a single-center analysis.

BACKGROUND: The aim of this study was to discuss indications and outcomes for conversion to thoracotomy during thoracoscopic lobectomy. MATERIALS AND METHODS: Patients who underwent lobectomy for non-small cell lung cancer between January 2012 and December 2016 were evaluated retrospectively. The study included 129 patients who underwent video-assisted thoracoscopic lobectomy (group-V) and 18 patients converted from thoracoscopic lobectomy to thoracotomy due to unexpected intraoperative complications (group-T). RESULTS: The two patient groups showed no statistical differences in terms of demographic characteristics. Causes of unexpected conversions to thoracotomy were hemorrhage in six patients, dense pleural adhesions in seven patients, fused fissure in one patient, and fibrocalcified lymph nodes around the vascular structures in four patients. Operative time was 180.37 ± 68.6 min in group-V and 235 ± 72.6 min in group-T (p = 0.003). Intraoperative blood loss was 263.9 ± 180.6 mL in group-V, compared to 562.7 ± 296.2 mL in group-T (p < 0.001). Patient age ≥ 70 years was a significant risk factor for conversion to thoracotomy (p = 0.015, odds ratio 4.73). The 5-year survival rate in group-V was 71.4% {mean: 65.2 months [95% confidence interval (CI) 59.6-70.8]}, while that in group-T was 80% [mean 54.9 months (95% CI 45.9-63.8)] (p = 0.548). CONCLUSION: Advanced age was identified as the main risk factor for conversion to thoracotomy. However, early- and long-term outcomes were similar in the two groups, indicating that video-assisted thoracoscopic surgery is a safe and applicable method.