Source of Support: None, Conflict of Interest: None
Primary lung cancer is being diagnosed with increasing frequency in Northern India. In 1009 patients seen over the last 10 years we found important differences in clinical spectrum from those in the West. Both the mean and peak ages of lung cancer were lower. The smoker: non-smoker ratio was 2.7:1. Most of the patients had advanced disease and 51.8% had evidence of metastases. The commonest presentation was mass lesion with or without collapse, 25% had pleural effusion and 16.7% superior caval compression syndrome. Comparative analysis of important features and cell-typo patterns, as reported in different clinical studies from this country, generally reveal an uniform pattern.