Angioedema of the Intestine

Figure 1. Abdominal computed tomography was performed in a 58-year-old woman with acute abdominal pain, nausea, vomiting, and abdominal distention. The patient had had recurrent swelling of the tongue and pharynx during therapy with lisinopril, but the medication had been continued. On the scan, the mucosa of a loop of small intestine is markedly thickened, and the irregularities within the wall are most consistent with the presence of edema (thick arrow). The valvulae conniventes are prominent and widened (thin arrow), resulting in a severely narrowed lumen. All of the patient's symptoms resolved within 24 hours after the discontinuation of lisinopril. . . .