We reported a patient with ulcerative colitis who developed microvascular thrombosis with secondary cutaneous gangrene. This is an uncommon complication of bowel inflammatory disease due to the hypercoagulability state that occurs in the active inflammatory phase. Differential diagnosis with polyarteritis nodosa had to be performed due to the presence of abdominal and cutaneous manifestations. The diagnosis was confirmed by colonoscopy and biopsies of various segments of the bowel, Doppler ultrasonography of the legs and biopsy of the cutaneous lesion. The patient was treated with prednisone (1 mg/kg), sulfasalazine and anticoagulation, with remission of cutaneous and bowel manifestations.
Cutaneous gangrene; intestinal inflammatory disease; ulcerative colitis; vasculitis; polyarteritis nodosa
