Abstract
A 73-year-old man who had received right upper lobectomy for pulmonary carcinosarcoma consisting of adenocarcinomatous and fibrosarcomatous components 9 months ago, developed melena. As enterography of the jejunum showed a protruding tumor with thin barium pool, laparotomy was performed. Enteroscopy of the jejunum revealed bleeding from the protruding tumor, and partial jejunal resection was performed. Histological examination revealed that the jejunal tumor had similar features to the carcinomatous component of the pulmonary tumor. He died of cereberal bleeding 66 days after laparotomy. Only 5 patients with pulmonary carcinosarcoma complicated with small intestinal metastasis have been reported.
