2003 Volume 17 Issue 4 Pages 524-528
A 64-year-old female complained of cough, and was referred to our hospital. On admission, chest X-rays showed a mass and atelectasis of the left lower lobe. Chest computed tomography showed a mass shadow in the left lower lobe which obstructed the left main bronchus. Bronchoscopy revealed a whitish polypoid tumor which was obstructing the left main bronchus. We performed punch biopsy of the polypoid tumor, but the histological examination revealed normal bronchial mucosa. However, lung cancer was suspected and surgery was performed. Pneumonectomy of the left lung was performed. The resected specimen showed a tumor in the left lower lobe protruding into the left main bronchus without invading the bronchial mucosa. Histological findings showed adenocarcinoma comprised of spindle cell and giant cell components, so we finally diagnosed pleomorphic carcinoma of the lung.