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OBJECTIVES Postoperative empyema is a severe, potentially lethal complication also present, but poorly studied in patients undergoing surgery for pleural mesothelioma. We aimed to analyse which perioperative characteristics might be associated with an increased risk for postoperative empyema. METHODS From September 1999 to February 2023 a retrospective analysis of consecutive patients undergoing surgery for pleural mesothelioma at the University Hospital of Zurich was performed. Uni- and multivariable logistic regression was used to identify associated risk factors of postoperative empyema after surgery. RESULTS A total of 400 PM patients were included in the analysis, of which n  = 50 patients developed empyema after surgery (12.5%). Baseline demographics were comparable between patients with (E yes) and without empyema (E no). 39% (n  = 156) patients underwent extrapleural pneumonectomy (EPP), of whom 22% (n  = 35) developed postoperative pleural empyema; 6% (n = 15) of the remaining 244 patients undergoing pleurectomy and decortication (n  = 46), extended pleurectomy and decortication (n  = 114), partial pleurectomy (n  = 54) or explorative thoracotomy (n  = 30) resulted in postoperative empyema. In multivariable logistic regression analysis, EPP (odds ratio 2.8, 95% confidence interval 1.5–5.4, P  = 0.002) emerged as the only risk factor associated with postoperative empyema when controlled for smoking status. Median overall survival was significantly worse for E yes (16 months, interquartile range 5–27 months) than for E no (18 months, interquartile range 8–35 months). CONCLUSIONS Patients undergoing EPP had a significantly higher risk of developing postoperative pleural empyema compared to patients undergoing other surgery types. Survival of patients with empyema was significantly shorter. [ABSTRACT FROM AUTHOR]

L-Citrulline is a non-essential but still important amino acid that is released from enterocytes. Because plasma levels are reduced in case of impaired intestinal function, it has become a biomarker to monitor intestinal integrity. Moreover, oxidative stress induces protein citrullination, and antibodies against anti-citrullinated proteins are useful to monitor rheumatoid diseases. Citrullinated histones, however, may even predict a worse outcome in cancer patients. Supplementation of citrulline is better tolerated compared to arginine and might be useful to slightly improve muscle strength or protein balance. The following article shall provide an overview of L-citrulline properties and functions, as well as the current evidence for its use as a biomarker or as a therapeutic supplement. [ABSTRACT FROM AUTHOR]

Background: We aimed to analyse the nodal spread of our non-small cell lung cancer pN2 cohort according to tumour location, the possible implications of an unusual spreading pattern, and other factors influencing postoperative survival after anatomical lung resection., Methods: In this retrospective observational study, clinical data was collected for 124 consecutive non-small cell lung cancer (NSCLC) patients with a pathological N2 (stage IIIA or B) undergoing anatomical lung resection at our institution between 2001 and 2010. Cox regression was used to analyse independent predictors of 5-year overall survival and recurrence-free survival., Results: A total of 105 patients were included in the final analysis. Tumour location in the right upper lobe and middle lobe  was significantly more often associated with involvement of lymph node stations 2 and 4 than NSCLC in the right lower lobe (station 2: right upper vs right lower lobe, p = 0.001 and middle vs right lower lobe, p = 0.038; station 4: right upper vs right lower lobe, p<0.001 and middle vs right lower lobe, p = 0.056), while tumours in the right upper lobe showed significantly less involvement of stations 7 and 8 compared with right lower lobe tumours (station 7 p <0.001, station 8 p = 0.004). Left sided tumours in the upper lobe had significantly more involvement of station 5 compared to lower lobe tumours (p = 0.009). However, atypical lymphatic nodal zone involvement did not emerge as a significant predictor of survival. Lymphovascular invasion was the only independent prognostic factor for 5-year overall survival (hazard ratio [HR] 2.10, p = 0.015) and recurrence-free survival (HR 1.68, p = 0.049) when controlled for adjuvant therapy., Conclusion: Lymphovascular invasion was identified as the only independent prognostic factor for 5-year overall survival and recurrence-free survival in our pathologically proven N2 NSCLC cohort when controlled for adjuvant therapy. This study extends the current evidence of an adverse prognostic effect of lymphovascular invasion on a stage III population, confirms the adverse prognostic effect of lymphovascular invasion detected by immunohistochemistry, and thereby reveals another subgroup within the pN2 population with worse prognosis regarding 5-year overall survival and recurrence-free survival. &nbsp.