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BACKGROUND: Bronchial bifurcation abnormalities are often discovered incidentally on chest computed tomography or bronchoscopy. As this condition is asymptomatic, it has little effect on the disease course of patients with lung cancer. However, this abnormality must be considered when performing lung resection. CASE PRESENTATION: Patient 1 was a 73-year-old man with suspected simultaneous triple lung cancers [cT1c (3) N0M0, Stage IA3] in the right and left upper lobes. He was initially scheduled to undergo right upper lobectomy and systematic nodal dissection. Chest computed tomography revealed a displaced B3 that arose from the right middle lobe bronchus. V1+2 was transected first, followed by the superior truncus of the pulmonary artery, and B1+2, respectively. After the branches of V3 were ligated, B3 was identified smoothly. Finally, the incomplete interlobar fissure between the upper and middle lobes was separated using an auto-stapler. No vascular abnormalities were observed. Patient 2 was a 62-year-old woman with suspected lung cancer (cT1cN0M0, Stage IA3) in the right upper lobe, and was scheduled to undergo right upper lobectomy and lobe-specific nodal dissection. Chest computed tomography revealed a right top pulmonary vein and a displaced B1 that arose from the right main bronchus independently. Because V1+3 was resected simultaneously during upper and middle lobe resection during robot-assisted thoracic surgery, the procedure was cool-converted to video-assisted thoracic surgery. An independently A1 was observed, followed by A2b and A3, which branched off as a common stem. A right top pulmonary vein was smoothly detected. Each blood vessel was transected using an auto-stapler. B2+3 was transected first using an auto-stapler, followed by B1. CONCLUSIONS: The displaced anomalous bronchus is often accompanied by pulmonary arterial or venous abnormalities and an incomplete interlobar fissure. A "hilum first, fissure last" technique is often useful. Preoperative evaluation and surgical planning are important.

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BACKGROUND: Although sublobar resection (wedge resection [Wed] or segmentectomy [Seg]) has become a standard operative procedure for clinical stages IA1 and IA2 non-small cell lung cancer (NSCLC) in Japan, the impact of this procedure on the prognosis and postoperative complications in real-world clinical practice is unknown. METHODS: This study retrospectively analyzed risk factors for a poor prognosis and postoperative complications of 470 patients with clinical stage ≤ IA2 NSCLC who underwent surgery from 2012 to 2021. RESULTS: Among the patients with a consolidation-to-tumor ratio (CTR) higher than 0.5, the 5-year relapse-free survival (RFS) rate was significantly lower in the Wed group (72.1%) than in the Seg (85.8%) and Lob (86.8%) groups (p < 0.01), but the difference between the Seg and Lob groups was not significant. Among patients with a CTR of 0.5 or lower, the 5-year RFS rate did not differ significantly among the three groups. Multivariable analysis of RFS showed that the prognosis was significantly worse in the Wed group than in the Lob group (hazard ratio, 2.83; p < 0.01), but the difference between the Wed and Seg groups or the between Seg and Lob groups was not significant. Multivariable analysis of postoperative complications showed a significantly lower risk in the Wed group than in the Seg group (odds ratio, 0.31; p < 0.01). CONCLUSIONS: Seg could become the standard operative procedure for clinical stages IA1 and IA2 NSCLC patients. Wed is suggested to be an option for patients with a CTR of 0.5 or lower and has the advantage of avoiding postoperative complications.

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BACKGROUND/AIM: The outcomes of lung cancer treatment have improved over time. However, in contrast to other treatments, the clinical outcomes of salvage surgery are seldom reported because the follow-up periods after salvage surgery are short. PATIENTS AND METHODS: We conducted a comprehensive study involving consecutive patients who underwent salvage surgery at two different institutions. Our analysis encompassed the exploration of clinicopathological features, perioperative variables, and surgical outcomes. Additionally, we employed propensity score matching to compare the long-term survival of patients with non-small cell lung cancer (NSCLC) who underwent salvage surgery with those who received induction chemoradiotherapy prior to surgery. RESULTS: Twenty-five patients underwent salvage procedures, while 113 patients received induction chemotherapy followed by surgery during the same study period. When assessing the overall survival (OS) from the registration date to the initial treatment date, the five-year OS rates were 73.8% in the induction group and 70.5% in the salvage surgery group (p=0.674). No significant differences were identified between the two groups in a cohort of 48 patients with NSCLC who were matched using propensity scores. CONCLUSION: In patients who underwent salvage surgery, reasonable long-term survival was achieved with outcomes comparable to those of induction chemotherapy followed by surgical resection.

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BACKGROUND: The relationship between risk factors of common postoperative complications after pulmonary resection, such as air leakage, atelectasis, and arrhythmia, and patient characteristics, including nutritional status or perioperative factors, has not been sufficiently elucidated. METHODS: One thousand one hundred thirty-nine non-small cell lung cancer patients who underwent pulmonary resection were retrospectively analyzed for risk factors of common postoperative complications. RESULTS: In a multivariate analysis, male sex (P = 0.01), age ≥ 65 years (P < 0.01), coexistence of chronic obstructive pulmonary disease (COPD) (P < 0.01), upper lobe (P < 0.01), surgery time ≥ 155 min (P < 0.01), and presence of lymphatic invasion (P = 0.01) were significant factors for postoperative complication. Male sex (P < 0.01), age ≥ 65 years (P = 0.02), body mass index (BMI) < 21.68 (P < 0.01), coexistence of COPD (P = 0.02), and surgery time ≥ 155 min (P = 0.01) were significant factors for severe postoperative complication. Male sex (P = 0.01), BMI < 21.68 (P < 0.01), thoracoscopic surgery (P < 0.01), and surgery time ≥ 155 min (P < 0.01) were significant risk factors for postoperative air leakage. Coexistence of COPD (P = 0.01) and coexistence of asthma (P < 0.01) were significant risk factors for postoperative atelectasis. Prognostic nutrition index (PNI) < 45.52 (P < 0.01), lobectomy or extended resection more than lobectomy (P = 0.01), and surgery time ≥ 155 min (P < 0.01) were significant risk factors for postoperative arrhythmia. CONCLUSION: Low BMI, thoracoscopic surgery, and longer surgery time were significant risk factors for postoperative air leakage. Coexistence of COPD and coexistence of asthma were significant risk factors for postoperative atelectasis. PNI, surgery time, and surgical procedure were revealed as risk factors of postoperative arrhythmia. Patients with these factors should be monitored for postoperative complication. TRIAL REGISTRATION: The Institutional Review Board of Kanazawa Medical University approved the protocol of this retrospective study (approval number: I392), and written informed consent was obtained from all patients.

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Lung cancer complicated by follicular lymphoma has rarely been reported in the literature. A 69-year-old male with an abnormal shadow on a chest radiograph was referred to our hospital. A mass in the right lung was seen on chest computed tomography (CT). Positron emission tomography-CT showed fluorodeoxyglucose accumulation in the esophagus and multiple intra-abdominal lymph nodes, in addition to the right lung lesion. The lung lesion was diagnosed as a pulmonary adenocarcinoma after biopsy. Upper and lower gastrointestinal endoscopies did not reveal the presence of a tumor. Open lymph node biopsy was performed to determine the course of treatment, leading to a diagnosis of follicular lymphoma. The patient finally underwent radical resection for lung cancer; the follicular lymphoma was judged to be low-grade and was followed up. When complications involving other organs are detected during systemic examination of a patient with lung cancer, it is necessary to distinguish between metastasis to other organs and complications of other malignant diseases, as this will greatly influence the treatment strategy.

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INTRODUCTION: Few studies have investigated the prognostic factors for non-adenocarcinoma of the lung. We retrospectively evaluated the prognostic factors on the basis of histological type of non-adenocarcinoma of the lung treated by pulmonary resection. METHODS: We enrolled 266 patients with non-adenocarcinoma of the lung in this retrospective study: 196 with squamous cell carcinoma (SCC) and 70 with non-SCC. RESULTS: Relapse-free survival (RFS) did not differ significantly between SCC and non-SCC patients (p = 0.33). For SCC patients, RFS differed significantly between patients who underwent wedge resection and non-wedge resection (p < 0.01) and between patients with Clavien-Dindo grade ≥3a and 0-2 postoperative complications (p < 0.01). For non-SCC patients, RFS rates were significantly different in the groups divided at neutrophil-to-lymphocyte ratio = 2.40 (p = 0.02), maximum standardized uptake value (SUVmax) = 8.39 (p < 0.01), between patients with pathological stage (pStage) 0-I and with pStage more than II (p < 0.01). For SCC patients, male sex (p = 0.04), wedge resection (p = 0.01), and Clavien-Dindo grade ≥3a (p = 0.02) were significant factors for RFS in multivariate analysis. For non-SCC patients, neutrophil-to-lymphocyte ratio >2.40 (p < 0.01), SUVmax >8.39 (p = 0.01), and pStage ≥II (p = 0.03) were significant factors for RFS in multivariate analysis. CONCLUSION: RFS did not differ significantly differently between SCC and non-SCC patients. It is necessary to perform more than segmentectomy and to avoid severe postoperative complications for SCC patients. SUVmax might be an adaptation criterion of adjuvant chemotherapy for patients with non-adenocarcinoma and non-SCC of the lung.

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BACKGROUND: Lung abscess treatment results the treatment results improved with the development of antibiotics; however, surgical treatment is indicated when pyothorax is present, surgical treatment is indicated. When a lung abscess ruptures, pyothorax and fistula occur, which are difficult to treat. CASE PRESENTATION: A 74-year-old woman who experienced exacerbated dyspnea and left back pain for 10 days was diagnosed with a lung abscess caused by an odontogenic infection. The patient's medical history included hypertension, angina pectoris, untreated dental caries, and periodontitis. Despite administration of meropenem for 5 days, inflammatory markers increased. Chest radiography revealed pleural effusion exacerbation; therefore, the patient immediately underwent chest drainage and surgery was planned. Thoracic debridement and parietal and visceral decortication were performed. However, the lung abscess in the lateral basal segment ruptured during visceral decortication. As the tissue was fragile and difficult to close with sutures, free pericardial fat was implanted in the ruptured abscess cavity and fixed with fibrin glue, and sutured to the abscess wall. No signs of postoperative air leakage or infection of the implanted pericardial fat were observed. All drainage tubes were removed by postoperative day 9. The patient was discharged on postoperative day 12 and underwent careful observation during follow-up as an outpatient. At 1 year and 2 months after surgery, empyema recurrence was not observed. CONCLUSIONS: A lung abscess that ruptured intraoperatively was successfully and effectively treated by implantation of free pericardial fat in the abscess cavity.

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BACKGROUND: Among a cohort of patients who underwent chest wall resection and reconstruction by rigid prosthesis, 6% required removal of the prosthesis, and in 80% of these cases the indication for prosthesis removal was infection. Although artificial prosthesis removal is the primary approach in such cases of infection, the usefulness of vacuum-assisted closure (VAC) has also been reported. CASE PRESENTATION: A 64-year-old man with diabetes mellitus underwent right middle and lower lobectomy with chest wall (3rd to 5th rib) resection and lymph node dissection because of lung squamous cell carcinoma. The chest wall defect was reconstructed by an expanded polytetrafluoroethylene (PTFE) sheet. Three months after surgery, the patient developed an abscess in the chest wall around the PTFE sheet. We performed debridement and switched to VAC therapy 2 weeks after starting continuous drainage of the abscess in the chest wall. The space around the PTFE sheet gradually decreased, and formation of wound granulation progressed. We performed wound closure 6 weeks after starting VAC therapy, and the patient was discharged 67 days after hospitalization. CONCLUSIONS: We experienced a case of chest wall reconstruction infection after surgery for non-small cell lung cancer that was successfully treated by VAC therapy without removal of the prosthesis. Although removal of an infectious artificial prosthesis can be avoided by application of VAC therapy, perioperative management to prevent surgical site infection is considered essential.

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INTRODUCTION: Although histological subtype in lung adenocarcinoma has been reported as a poor prognostic factor in several studies, its utility has not yet been revealed as an adaptation criterion of postoperative adjuvant chemotherapy. METHODS: Four hundred ninety-four lung adenocarcinoma patients were enrolled in this retrospective study. A subanalysis was performed in 420 lung adenocarcinoma patients with pathological stage 0-I disease for risk factors of postoperative recurrence. RESULTS: Maximum standardized uptake value (SUVmax) (p < 0.01), pathological stage ≥II (p < 0.04), and adjuvant chemotherapy (p < 0.01) were risk factors for recurrence in the multivariate analysis, whereas histological subtype was not a significant factor for recurrence at all stages. In the subanalysis, univariate analysis showed that carcinoembryonic antigen expression (p < 0.01), prognostic nutrition index (p = 0.03), SUVmax (p < 0.01), lymphatic invasion (p < 0.01), vascular invasion (p < 0.01), grade 3-4 differentiation (p < 0.01), pathological stage ≥IA3 (p < 0.01), and histological subtype (p = 0.03) were significant risk factors of recurrence. SUVmax (p < 0.01) was the only risk factor for recurrence in the multivariate analysis, whereas histological subtype was not (p = 0.07). Relapse-free survival (RFS) was significantly worse in the micropapillary- and solid-predominant subtype groups than in the other subtypes (p = 0.01). On the other hand, RFS with or without uracil-tegafur as adjuvant chemotherapy in lung micropapillary- or solid-predominant adenocarcinoma patients with pathological stage IA-IB disease was not significantly different. CONCLUSION: This study suggested that histological subtypes, such as micropapillary- or solid-predominant pattern, are risk factors for recurrence in pathological stage 0-I lung adenocarcinoma and may be necessary adjuvant chemotherapy instead of uracil-tegafur.

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BACKGROUND: Antiphospholipid syndrome causes systemic arterial and venous thromboses due to the presence of antiphospholipid antibodies. Adrenal insufficiency is a rare complication of antiphospholipid syndrome that may result in fatal outcomes if left untreated. Therefore, we report adrenal insufficiency as a rare complication of bilateral adrenal infarction associated with antiphospholipid syndrome and trauma surgery. CASE PRESENTATION: A 64-year-old male patient underwent surgery for a left traumatic hemothorax. He concurrently had antiphospholipid syndrome and was receiving warfarin. Postoperatively, the patient complained of severe lumbar back pain despite resuming anticoagulation therapy, and he experienced paralytic ileus and shock. Abdominal contrast-enhanced computed tomography revealed adrenal swelling and increased surrounding retroperitoneal adipose tissue density. Diffusion-weighted abdominal magnetic resonance imaging showed high-intensity areas in the bilateral adrenal glands. Cortisol and adrenocorticotropic hormone levels were 3.30 µg/dL and 185.1 pg/dL, respectively. Subsequently, the patient was diagnosed with bilateral adrenal infarction and acute adrenal insufficiency, and hydrocortisone was immediately administered. Adrenal insufficiency improved gradually, and the patient was discharged after initiating steroid replacement therapy. CONCLUSIONS: The timing of postoperative anticoagulant therapy initiation remains controversial. Therefore, adrenal insufficiency due to adrenal infarction should be monitored while anticoagulant therapy is discontinued in patients with antiphospholipid syndrome.

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INTRODUCTION: The relative efficacies of epidermal growth factor receptor-tyrosine kinase inhibitors (EGFR-TKIs) and immune checkpoint inhibitors (ICIs) for the treatment of recurrent non-small cell lung cancer (NSCLC) after surgery remain unclear. METHODS: Among 801 patients with NSCLC who underwent pulmonary resection at Kanazawa Medical University between 2017 and 2021, 64 patients had recurrence. We retrospectively compared the efficacies of EGFR-TKIs and ICIs in these patients with recurrent NSCLC who underwent pulmonary resection. RESULTS: The 3-year overall survival rates after recurrence were 79.3% in patients who received EGFR-TKIs, 69.5% in patients who received ICIs, and 43.7% in patients who received cytotoxic agents. There was no significant difference in overall survival between patients treated with EGFR-TKIs and ICIs (p=0.14) or between patients treated with ICIs and cytotoxic agents (p=0.23), but overall survival was significantly higher in patients treated with EGFR-TKIs compared with cytotoxic agents (p<0.01) The probabilities of a 2-year response were 88.5%, 61.6%, and 25.9% in patients treated with EGFR-TKIs, ICIs, and cytotoxic agents, respectively. There was no significant difference in response periods between patients treated with EGFR-TKIs and ICIs (p=0.18), but the response period was significantly better in patients treated with EGFR-TKIs (p<0.01) or ICIs (p=0.03) compared with cytotoxic agents. Percent-predicted vital capacity (p=0.03) and epidermal growth factor receptor gene mutation (p<0.01) were significant factors affecting the overall response to chemotherapy in multivariate analysis. CONCLUSION: EGFR-TKIs and ICIs are effective for treating recurrent NSCLC after surgery. Although adjuvant chemotherapy for completely resected pathological stage II to IIIA NSCLC, atezolizumab or Osimertinib, has also been recently approved as adjuvant chemotherapy, there is a risk that patients who relapse after adjuvant chemotherapy will have less choice.

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OBJECTIVES: It is unclear whether a lower lobe origin is a risk factor for early recurrence of non-small cell lung cancer (NSCLC) in patients who underwent pulmonary resection. MATERIALS AND METHODS: The risk factors for early recurrence, defined as recurrence occurring within 1 year after surgery, were analyzed in 476 patients with NSCLC who underwent pulmonary resection without wedge resection. RESULTS: The proportion of men, Brinkman's index, carcinoembryonic antigen levels, and the maximum standardized uptake value (SUVmax) were significantly higher in patients with early recurrence than in those without early recurrence. Furthermore, the rates of lower lobe origin, extended resection beyond lobectomy, lymphatic invasion, vascular invasion, and advanced-stage disease were significantly higher in patients with early recurrence. Age (odds ratio [OR] = 4.46, p < 0.01), SUVmax (OR = 5.78, p = 0.02), a lower lobe origin (OR = 3.06, p = 0.01), and pathological stage (OR = 3.34, p = 0.01) were risk factors for early recurrence in multivariate analysis. Furthermore, only early recurrence (OR = 3.34, p = 0.01) was a risk factor for overall survival in multivariate analysis, and overall survival outcomes and prognoses significantly differed between patients with and without early recurrence (p < 0.01). CONCLUSIONS: Age, SUVmax, a lower lobe origin, and pathological stage are risk factors for early recurrence. These results suggest that for patients with NSCLC who underwent pulmonary resection, SUVmax and a lower lobe origin are important for deciding the indication for adjuvant chemotherapy in addition to pathological stage.

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PURPOSE: Cancer-inflammation prognostic index (CIPI) is calculated by multiplying the concentration of carcinoembryonic antigen by neutrophil-to-lymphocyte ratio. CIPI has been reported as a prognostic factor for colorectal cancer. Although carcinoembryonic antigen and neutrophil-to-lymphocyte ratio have been reported as prognostic factors for non-small cell lung cancer (NSCLC), it has not been investigated whether CIPI is a useful marker. METHODS: We analyzed the prognostic factors, including CIPI, in 700 NSCLC patients treated by pulmonary resection. We also analyzed a subgroup of 482 patients with pathological stage I NSCLC. RESULT: CIPI > 14.59 (P < 0.01), maximum standardized uptake value (SUVmax) > 5.35 (P < 0.01), lymphatic invasion (P = 0.01), and pathological stage (P < 0.01) were significant factors for relapse-free survival (RFS) in multivariate analysis. SUVmax > 5.35 (P < 0.01) and pathological stage (P < 0.01) were revealed as significant factors for overall survival in the multivariate analysis. In the subanalysis, CIPI > 14.88 (P = 0.01) and SUVmax > 5.07 (P < 0.01) were significant factors for RFS of pathological stage I NSCLC in multivariate analysis. CONCLUSION: CIPI was a significant factor for RFS in NSCLC patients treated surgically, even in those with pathological stage I disease. SUVmax was also a significant factor for RFS and overall survival in NSCLC patients treated surgically, and for RFS in patients with pathological stage I NSCLC. TRIAL REGISTRATION: The Institutional Review Board of Kanazawa Medical University approved the protocol of this retrospective study (Approval Number: I392), and written informed consent was obtained from all patients.

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Although rigid bronchoscopy may lead to tracheal injury, the incidence is unknown. A 59-year-old woman diagnosed with clinical stage IV esophageal cancer was scheduled to undergo placement of a silicon Y-stent by rigid bronchoscopy to address tracheal stenosis. When the tumor was cored out by rigid bronchoscopy, perforation of the lower trachea occurred, and a silicon Y-stent was inserted to cover the tracheal fistula. Chest X-ray revealed right pneumothorax, and chest drainage was performed. When spontaneous ventilation was confirmed, the patient was weaned from the ventilator in the operating room. Chest computed tomography immediately after surgery showed an air space on the right side of the stent. The space gradually disappeared over time, and no air leakage was observed. The chest drain was removed on postoperative Day 12. Conservative treatment using a silicon Y-stent for iatrogenic tracheal injury due to rigid bronchoscopy is safe.

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INTRODUCTION: Although the consolidation diameter of a tumor on computed tomography (CT) is an adaptation criterion for limited resection in early-stage non-small cell lung cancer (NSCLC), whether the maximum standardized uptake value (SUVmax) is also an adaptation criterion for limited resection has not been evaluated. METHODS: In total, 478 NSCLC patients with clinical stage IA disease were analyzed, among whom 383 were used to perform a sub-analysis. RESULTS: Multivariate analysis showed that consolidation diameter (odds ratio [OR]: 3.05, p = 0.01), SUVmax (OR: 10.74, p = 0.02), and lymphatic invasion (OR: 10.34, p < 0.01) were risk factors for lymph node metastasis in clinical stage IA NSCLC patients. Furthermore, age (OR: 2.98, p = 0.03), SUVmax (OR: 13.07, p = 0.02), and lymphatic invasion (OR: 5.88, p = 0.02) were risk factors for lymph node metastasis in clinical stage IA lung adenocarcinoma patients according to multivariate analysis. CONCLUSION: Consolidation diameter of a tumor on CT, SUVmax, and lymphatic invasion are risk factors for lymph node metastasis. However, SUVmax was a risk factor for lymph node metastasis rather than consolidation diameter on CT in lung adenocarcinoma patients. These results suggest that for early-stage lung adenocarcinoma patients, SUVmax is more important for deciding the indication of limited resection than consolidation diameter of the tumor on CT.

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BACKGROUND: A recent study reported the effect of preoperative hyponatremia on postoperative outcomes of patients with non-small cell lung cancer. However, the influence of postoperative hyponatremia on postoperative outcomes has not been completely investigated. METHODS: We retrospectively studied 75 octogenarians who underwent pulmonary surgery for non-small cell lung cancer between 2009 and 2018. We divided them into hyponatremic and non-hyponatremic groups, depending on preoperative and immediate postoperative serum sodium levels, and investigated their clinicopathological characteristics and outcomes. Disease-specific survival and cumulative incidence of relapse rates between the two groups were calculated and compared using the stratified Kaplan-Meier method. Univariable and multivariable analyses were performed to identify prognostic factors. RESULTS: Preoperative hyponatremia was associated with 66.7% of postoperative respiratory and 88.9% of non-cardiovascular complications. The long-term prognosis of the postoperative hyponatremic group was significantly worse than that of their counterpart. The 3-year disease-specific survival and 3-year cumulative incidence of relapse rate were 55.9% and 46.2%, respectively, and the median observation period after surgery was 37.4 (interquartile range, 23.7-51.0) months for the entire cohort. Kaplan-Meier curves showed that hyponatremia was associated with worse disease-specific survival and cumulative incidence of relapse. Multivariable analysis identified hyponatremia as a factor that predicted unfavorable disease-specific survival and cumulative incidence of relapse. CONCLUSIONS: Immediate postoperative hyponatremia is an independent predictor of non-small cell lung cancer outcomes among octogenarians. Preoperative hyponatremia was associated with a high frequency of postoperative respiratory and non-cardiovascular complications. Surgical indications in older patients with hyponatremia should be carefully considered with follow-up.

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Tension pyopneumothorax is a rare and life-threatening complication of pneumonia, lung abscess, and empyema, and immediate thoracic drainage or surgery is required. A 70-year-old man presented to another hospital 2 weeks after exacerbation of dyspnea and anorexia. Chest X-ray imaging revealed leftward deviation of the mediastinum, pleural effusion, and collapse of the right lung. The patient was referred to our hospital for surgical treatment. He underwent chest drainage immediately after the transfer. The patient's blood pressure was elevated after drainage. Chest X-ray imaging showed improvement in the mediastinal deviation, but expansion failure of the lung occurred. Debridement and parietal and visceral decortications were performed under thoracotomy. The thoracic cavity was irrigated using a pulse lavage irrigation system with 12,000 mL of saline. The patient underwent fibrinolytic therapy with intrathoracic urokinase postoperatively because of persistent high inflammatory marker levels and multilocular pleural effusion. Parvimonas micra was detected in the preoperative pleural fluid culture. He was discharged on postoperative day 22 and followed up as an outpatient afterwards. Two years have passed since the surgery, and there has been no recurrence of empyema. Decortication of the parietal and visceral pleura and irrigation using a pulse lavage irrigation system were effective.

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BACKGROUND: In the post-intubation period, laryngeal edema is one of the most severe complications, which can cause significant morbidity and even death. Herein, we report a case in which we performed a temporary tracheostomy during surgery because of the risk of postoperative laryngeal edema, successfully avoiding post-intubation laryngeal edema complications. CASE PRESENTATION: A 78-year-old man underwent surgery for left upper lobe lung cancer. He had a history of chemoradiotherapy for laryngeal cancer, bronchial asthma, and chronic obstructive pulmonary disease. He was diagnosed with grade 1 laryngeal edema using computed tomography, and there was a risk of developing post-intubation laryngeal edema. Additionally, there was a decrease in laryngeal and pulmonary functions; therefore, postoperative aspiration pneumonia was judged to be a fatal risk. A temporary tracheostomy was performed during surgery to avoid postoperative intubation laryngeal edema. He was found to have exacerbated laryngeal edema, which is a serious complication of airway stenosis. CONCLUSIONS: Temporary tracheostomy should be considered to avoid airway stenosis due to post-intubation laryngeal edema in patients with laryngeal edema after radiotherapy.

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