Another interesting study is termed, -The role of extrapleural pneumonectomy in malignant pleural mesothelioma. A Lung Cancer Study Group trial- by VW Rusch, S Piantadosi and EC Holmes – Memorial Sloan-Kettering Cancer Center, New York, N.Y. The Journal of Thoracic and Cardiovascular Surgery, Vol 102, 1-9 – The following is an excerpt: -Malignant pleural mesothelioma can be quite a fatal cancer by which operation may be the mainstay of treatment because chemotherapy and radiation are relatively ineffective. The option of operation for malignant pleural mesothelioma remains controversial. Extrapleural pneumonectomy has long been advocated given that it allows complete removal of gross tumor and can be affiliated with long-term survival. To observe extrapleural pneumonectomy, we conducted a prospective multiinstitutional trial in patients with biopsy-proved previously untreated malignant pleural mesothelioma. Criteria for extrapleural pneumonectomy were (1) potentially completely resectable unilateral disease by computed tomography scan, (2) predicted postresection forced expiratory volume in 1 second in excess of 1 L/sec, and (3) few others major medical conditions. Patients who weren’t candidates for extrapleural pneumonectomy were built with a more limited operation with or without adjuvant therapy or had nonsurgical treatment. From September 1985 to June 1988 83 eligible patients (64 male, 19 female) were entered. The mean age for everyone patients was 59.Many years. Only 20 belonging to the 83 patients (24%) underwent extrapleural pneumonectomy. Three of 20 patients (15%) died postoperatively. The recurrence-free survival was significantly longer for the patients undergoing extrapleural pneumonectomy than for other two groups (p = 0.03), but there wasn’t any difference in overall survival among the list of three groups. In univariate analyses, epithelial versus sarcomatoid and mixed histologic findings and platelet count not as much as 400,000 were of the better overall survival (p = 0.02), and gratifaction status (Karnofsky lower than 80) was predictive of recurrence (p = 0.02). Inside a multivariate analysis, histologic findings, sex, age, extrapleural pneumonectomy, weight-loss, and also gratification status all had no significant relation to survival. Extrapleural pneumonectomy was of a typical greater probabilities of relapse in distant sites than were limited operation and nonsurgical treatment. We conclude that (1) a small proportion of the patients with malignant pleural mesothelioma are candidates for extrapleural pneumonectomy, (2) extrapleural pneumonectomy carries a significant operative mortality and also manage to improve overall survival balanced with more conservative treatment options, (3) extrapleural pneumonectomy alters the patterns of relapse, and (4) factors previously thought to be affect survival in other series could not affect outcome in this particular trial.-
Another interesting study is referred to as, -A phase II trial of surgical resection and adjuvant high-dose hemithoracic radiation for malignant pleural Mesothelioma- by Valerie W. Rusch, MD, Kenneth Rosenzweig, MD, Ennapadam Venkatraman, PhD, Larry Leon, MS, Adam Raben, MD, Louis Harrison, MD, Manjit S. Bains, MD, Robert J. Downey, MD, Robert J. Ginsberg, MD – J Thorac Cardiovasc Surg 2001;122:788-795 From the Thoracic Service, Department of Surgery,a the Department of Radiation Oncology,b and also the Biostatistics Service, Department of Epidemiology and Biostatistics,c Memorial Sloan-Kettering Cancer Center, Los angeles, NY. Suggestions an excerpt: -Background: Surgical resection of malignant pleural mesothelioma is reported to have around an 80% rate of local recurrence. We performed a phase II trial of high-dose hemithoracic radiation after complete resection to ascertain feasibility as well as estimate rates of local recurrence and survival. Methods: Patients were eligible once they were built with a resectable tumor, as determined by computed tomographic scanning, and adequate cardiopulmonary function for extrapleural pneumonectomy or pleurectomy/decortication. After complete resection, patients received hemithoracic radiation (54 Gy) and then were accompanied with serial computed tomographic scanning. Results: From 1995 to 1998, 88 patients (73 men and 15 women; median age, 62.5 years) were put into case study. The operations performed included 62 extrapleural pneumonectomies (70%) and 5 leurectomies/decortications; procedures for exploration only were performed in 21 patients. Seven (7.9%) patients died postoperatively. Adjuvant radiation administered to 57 patients (54 undergoing extrapleural pneumonectomy and 3 undergoing pleurectomy/decortication) at the median dose of 54 Gy was well tolerated (grade 0-2 fatigue, esophagitis), apart from one late esophageal fistula. The median survival was 33.8 months for stage I and II tumors only 10 months for stage III and IV tumors (P = .04). For that patients undergoing extrapleural pneumonectomy, web sites of recurrence were locoregional in two, locoregional and distant in 5, and distant only in 30. Conclusion: Hemithoracic radiation after complete surgical resection with a dose not previously reported is achievable. Particularly if dramatically reduces local recurrence and is also linked to prolonged survival for early-stage tumors. Stage III disease has a dangerous of early distant relapse and could be regarded as for trials of systemic therapy added regimen of resection and radiation.-
We all owe a debt of gratitude to these fine researchers. In case you found all of these excerpts interesting, please check the studies on their entirety.
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