Familial Mediterranean fever with sigmoid colon stricture.

We describe a case of familial Mediterranean fever (FMF) with sigmoid colon stricture. The patient, a woman in her 30 s, had a 12-year history of ileocolitis-type Crohn's disease. The colonoscope could not pass because of the sigmoid colon stricture, and the patient was referred to our hospital with complaints of abdominal pain and fever. At 2-month postreferral, the patient presented with severe abdominal pain and fever. Computed tomography and intestinal ultrasonography revealed no bowel obstruction, whereas wall thickening was observed in the sigmoid colon and small bowel. Our medical interview revealed a cyclical nature to the symptoms. We diagnosed FMF and initiated colchicine. Subsequently, for more than 2 years, the patient remained asymptomatic, and the sigmoid colon stricture improved. FMF should be considered in patients with inflammatory bowel disease with periodic abdominal pain and fever.