Abstract
(case 1) A 73-year-old man was admitted because of an abnormal mass on a chest radiograph. Chest CT showed a tumor of 21 mm in the left S6 and left hilar lymph node enlargement. The patient underwent left lower lobectomy and mediastinal lymph node dissection. Histological examination revealed LCNEC with squamous cell carcinoma. (case 2) A 75-year-old man was admitted because of an abnormal mass on a chest radiograph. Chest CT revealed a tumor of 26 mm in the right S10 and right hilar lymph node enlargement. The patient underwent wedge resection of the right lower lobe. Histological examination revealed LCNEC with adenocarcinoma (micropapillary component). Combined LCNEC with a micropapillary component is an extremely rare tumor.
