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Lung cancer: histology, staging, treatment and survival.

Authors:
Fabiola Trocoli Novaes Daniele Cristina Cataneo Raul Lopes Ruiz Junior Júlio Defaveri Odair Carlito Michelin Antonio José Maria Cataneo

J Bras Pneumol 2008 Aug;34(8):595-600

Department of Surgery, Universidade Estadual Paulista, Botucatu School of Medicine, Botucatu, Brazil.

Objective: To analyze principal histological types of lung cancer, as well as the staging, treatment and survival of lung cancer patients.

Methods: This was a retrospective study based on the analysis of medical charts of patients treated at the Botucatu School of Medicine Hospital das Clínicas over a six-year period.

Results: From January of 2000 to January of 2006, 240 patients with lung cancer, most (64%) of whom were male, were treated. The most common histological type was squamous cell carcinoma (37.5%), followed by adenocarcinoma (30%), neuroendocrine carcinoma (19.6%) and large cell carcinoma (6.6%). Only 131 patients (54.6%) were treated. Of those, 52 patients (39.7%) received only chemotherapy, 32 (24.4%) were treated with chemotherapy combined with radiotherapy, and 47 (35.9%) were submitted to surgery alone or surgery accompanied by chemotherapy, with or without radiotherapy. Only 27 patients (20.6%) were submitted to surgery alone. Concerning staging, 34.4% presented stage IV at the time of diagnosis, 20.6% presented stage IIIB, 16.8% presented stage IIIA, and the remaining 28.2% were classified as stage I or II. Five-year survival was 65% for those in stage I and 25% for those in the remaining stages.

Conclusions: Of the various histological types, the most common was squamous cell carcinoma and the least common was large cell carcinoma. Most cases presented advanced stages at the moment of diagnosis, and less than 30% of the cases presented early stages. This accounts for the low survival rate and the small number of patients submitted to surgical treatment alone, the majority being submitted to chemotherapy alone.

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http://dx.doi.org/10.1590/s1806-37132008000800009DOI Listing
August 2008

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