A Case of Lung Cancer Arising in the Distal Portion of the Tracheal Bronchus

Abstract

A case of lung cancer in a segment of the tracheal bronchus and a review of 14 cases of lung cancer in anomalous bronchi were reported. The patient, a 39-year-old housewife, had a solitary pulmonary nodule on mass survey chest X ray. Chest tomogram and CAT scan showed an anomalous tracheobronchial tree. The right B^1 bronchus branched from the right wall of the lower trachea and B^<2+3> bronchus branched from the right main bronchus. There was no variation in vascular structures. Lung cancer arising in a tracheal bronchus is rare, and only 14 other cases have been reported. Knowledge of this uncommon variant was needed in performing surgery.