Importance of clinical staging in limited small-cell lung cancer: a valuable system to separate prognostic subgroups. The University of Toronto Lung Oncology Group.

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Abstract
PURPOSEIn an attempt to assess the response to treatment and survival of a group of patients treated with standard chemotherapy and radiotherapy, we undertook a retrospective review of small-cell lung cancer (SCLC) patients treated by the University of Toronto Lung Oncology Group.PATIENTS AND METHODSWe reviewed the records of 264 patients with limited SCLC who were treated from 1976 to 1985. Based on radiologic review and physical examination, patients were assigned to three prognostic groups: group 1 (very limited SCLC), negative mediastinoscopy and/or no evidence of mediastinal nodes on radiologic review; group 2, x-ray evidence of mediastinal node involvement or a positive mediastinoscopy; group 3, supraclavicular adenopathy or x-ray evidence of pneumonic consolidation, pleural effusion, or atelectasis. All patients received combination chemotherapy, radiotherapy to the primary site, and prophylactic cranial irradiation.RESULTSComplete response was seen in 52% of patients and partial response in 29%. R...

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