Nontraumatic intramural hematoma of the duodenum. Report of 4 cases and review of the literature.

The authors report 4 cases of nontraumatic intramural hematoma of the duodenum (IMHD), 1 of pancreatic origin, 2 due to anticoagulant therapy while the 4th was an unusual complication of periarteritis nodosa. The principal anatomical, clinical, biological and radiological characteristics of IMHD are reviewed. Therapy is discussed, emphasizing nonaggressive surgery when possible.