Perianal disease is one of the most disabling manifestations of Crohn's disease.A multidisciplinary approach of gastroenterologist,colorectal surgeon and radiologist is necessary for its management.A correct diagnosis,based on endoscopy,magnetic resonance imaging,endoanal ultrasound and examination under anesthesia,is crucial for perianal fistula treatment.Available medical and surgical therapies are discussedin this review,including new local treatment modalities that are under investigation.
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