Intraduodenal hematoma complicating intestinal biopsy: case reports and review of the literature.

We report two cases of postbiopsy duodenal hematoma and review 14 additional cases. Duodenal hematoma predominantly occurs in children and presents with abdominal pain, vomiting, and pancreatitis. Upper gastrointestinal series, abdominal ultrasound, and CT scan are useful in visualizing the hematoma. No comparative studies of the usefulness of these techniques are available, but a CT is indicated if perforation is suspected. The treatment is conservative if no perforation is detected, and resolution of symptoms generally occurs within 2 wk.