Background:

Crohn's disease is characterized by segmental granulomatous inflammation of the intestinal tract and usually affects the cutaneous tissues. Its development includes the complex interaction between genetic predisposition, exposure to the environment, dysfunction of the epithelial barrier and the abnormal immune response to pathogenic and commensal bacteria. The specific lesions of the disease are extra-intestinal manifestations, the most common: oral aphthae and perianal fistulas.

Objective:

to report a case with fistulizing perianal Crohn's disease.

Case report:

42-year-old male patient, white; with a history of having been treated since 2006 for recurrent aphthous stomatitis. He arrives at the Manuel Ascunce Domenech University Hospital for the first time in 2013, where he was evaluated and followed by the Coloproctology service.

Conclusions:

an evolutionary colonoscopy and biopsy was performed, it was suspected by the symptoms in Crohn's disease with perianal localization.

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