A case of small bowel carcinoma in Crohn's disease.

A 46-year-old man had symptoms of ileus four years and five months after being diagnosed as Crohn's disease. Upon small bowel radiography, a short, spindle shaped stenosis on the distal site of the ileum was found. In the resected specimen, there was a constricted area with wall hypertrophy, and the mucosal surface of this region was rough and granular. At the site of this region, well differentiated adenocarcinoma was noted, which infiltrated the serosa in the form of mucous adenocarcinoma. Transmural disproportional inflammation and non-caseating granuloma were also around there. The X-ray findings in this case are considered to be useful for diagnosis of carcinoma during the long term observation period for Crohn's disease.