A Rare Cause of Abdominal Pain: Intestinal Angioedema.

Angioedema with evidence of mucosal swelling is a rare condition that can be caused by angiotensin-converting enzyme inhibitors. The authors describe a case of a 28-year-old woman medicated with lisinopril 2 months before, with abdominal pain associated with nausea, vomiting and a onetime watery stool. A small volume of ascites was found in the abdominal ultrasound and the parietal thickening of the middle ileum in the abdominal computed tomography (CT). The complementary study was negative. The symptoms stopped after drug withdrawal. The authors intend to warn to this diagnosis, which has non-specific symptoms and if not suspected, can lead to a great morbidity for patients. The authors also intend to identify various signs that can be clues for its correct diagnosis.