[Duodenal Crohn's disease: diagnostic and therapeutic complexity].

Crohn's disease may involve any area of the digestive tract, but its localization in the duodenum is rare. The clinical, radiological or endoscopic findings may simulate those of peptic ulcer and histologic examination is not diagnostic. In contrast with Crohn's disease of any other localization, the formation of fistulas is exceptional. The authors present one case of duodenal Crohn's disease the unspecific symptomatology of which deviated the original orientation towards the more common diseases. Steroid treatment was not sufficient to control the disease which led to complications with the formation of an enterocutaneous fistula. The association of azathioprine was very effective not only in achieving remission of the process, but also in resolving the complications.