[Two cases of leiomyosarcoma of the duodenum].

Two cases of a leiomyosarcoma of the duodenum are reported. The first patient, a seventy-year-old woman, had experienced repeated instances of melena. She was diagnosed as having a leiomyosarcoma of the duodenum preoperatively, and was successfully given a pancreatoduodenectomy. The second patient, a fifty-one year-old woman, also had experienced instances of melena. Similarly, she was diagnosed an having leiomyosarcoma of the duodenum preoperatively, and was given a partial gastrectomy. A pathological examination showed little mitosis in either patient. The first patient is still alive three months after the operation, and the second patient also has been surviving for twelve years postoperatively.