Nontraumatic intramural hematoma of the duodenum.

We present a case of nontraumatic intramural hematoma of the duodenum. A 77-year-old woman complained of nausea, vomiting, and abdominal pain during hospitalization. There was no traumatic episode. Laboratory data showed anemia (hemoglobin, 7.7 g/dl). The diagnosis was confirmed by computed tomography (CT), which showed a mixed hyperdense and hypodense mass obstructing the third portion of the duodenum. The cause was considered to be bleeding tendency caused by an antiplatelet drug. The patient was treated conservatively and the size of the hematoma was followed on CT. She was able to resume oral feeding 2 weeks after admission.