A case of pleomorphic carcinoma of the lung rapidly growing into the bronchus

Abstract

A 77-year-old man with poorly controlled diabetes mellitus was admitted to our hospital because of dyspnea. Chest CT showed a 5-cm mass in the left lower lobe with an intrabronchial polypoid lesion. Bronchoscopy showed the bronchial polypoid tumor extending to the left main bronchus from the left lower lobe bronchus, but the left upper bronchus remained intact. Bronchoscopy after admission revealed the bronchial tumor growing rapidly and almost obstructing the left upper lobe bronchus. After the strict control of diabetes mellitus, left lower lobectomy was performed one week after admission. The postoperative course was uneventful. The bronchial stump was free from the tumor. Therefore, complete resection was conducted by a left lower lobectomy. The tumor was diagnosed as pleomorphic carcinoma of the lung without lymph node metastasis.