Abstract

Background: Lung cancer is the most common cancer diagnosed worldwide. Tobacco smoking is the most important environmental factor associated with the development of lung cancer. However, a large number of patients with lung cancer have no history of smoking frequently among female patients. There are no enough data in Eastern India regarding epidemiological study of lung cancer.Objectives: The aim of our study was to evaluate the prevalence and pattern of lung cancer in our institution (NRS Medical College and Hospital).
Materials and Methods: Our study was a retrospective analysis of prospectively collected data for newly diagnosed adult patients. All patients were registered only after lung cancer diagnosis was confirmed by histopathological and/or cytological examination. The following information was collected from the database such as age, sex, smoking status and histological type, disease location, and stage.
Results: A number of male patients were 786 (82%) and a number of female patients were 172 (18%). 692 (72.2%) patients had a history of smoking and 266 (27.8%) patients had no history of smoking in their life. Among the non-smoker patients, female patients were 147 (55.3%) and male patients were 119 (44.7%). 80% of patients came from rural areas and 20% of patients came from urban areas. In our study; histologically, the adenocarcinoma was 398 (41.6%) found most prevalent which is followed by squamous cell carcinoma 365 (38.1%).Conclusion: Adenocarcinoma lung with the right upper lobe involvement was prevalent in our study and non-smoker female patients were predominant. The major etiological factor was smoking. Awareness in the society is needed about cancerous effect of tobacco smoking for reducing the incidence of lung cancer.