[Large cell neuroendocrine carcinoma of the thymus; report of a case].

A 55-year-old man presented with an anterior mediastinal tumor, which was detected on a computed tomography scan for close investigation of blood-stained sputum. Operation was performed with the clinical diagnosis of a thymic carcinoma and the tumor was resected completely. The pathological findings revealed Masaoka stage IV, large cell neuroendocrine carcinoma of the thymus. The patients received postoperative chemotherapy and is well without recurrence for 10 months after the surgery.