ArticleLung India : official organ of Indian Chest Society
Clinical profile of small-cell lung cancer in North India: A 12-year analysis from a tertiary care center.
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Abstract
Introduction: The small cell variant is a relatively uncommon but aggressive form of lung cancer. The present study aims to analyse the clinical characteristics, treatment outcomes and prognostic factors of an ambispectively enrolled large cohort of small cell lung cancer (SCLC) in the Indian population over a decade-long period. Materials and Methods: All patients diagnosed with SCLC between 2008 and 2020 at a tertiary care lung cancer clinic were included. The clinical details, demographics, details of investigations, treatment and survival outcomes were recorded and analysed. Results: A total of 361 patients were included. The majority were males (86.4%) with a mean (SD) age of 57.3 (12.3) years. Further, 34.9% were current smokers, with the median smoking index being 520 (interquartile range [IQR]: 260-1000). The majority had good performance status, that is, the Eastern Cooperative Oncology Group scale (ECOG) 0 or 1 (65%), and Karnofsky Performance Scale (KPS) ≥70 (85.9%). Also, 73.3% had extensive stage disease. The median time from symptom onset to definitive diagnosis was 91 days. Treatment details were available for 179 patients: chemotherapy only (n = 128), combined chemo-radiotherapy (n = 41) and radiotherapy only (n = 10). The median (IQR) progression-free survival (PFS) was 182 (94 to 306) days and the median (IQR) overall survival (OS) was 205 (94 to 429) days. On univariate analysis, factors that significantly affected survival included smoking index and performance status. However, on multivariate analysis, only the performance status significantly affected PFS, whereas none of these factors were significant for OS. Conclusions: SCLC predominantly affects males with a heavy smoking index. The diagnosis is usually made late; survival remains poor and is predominantly affected by the performance status.
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