Pyoderma Gangrenosum in Crohn's Disease: Unusual Presentation and Management.

Pyoderma gangrenosum is an uncommon, destructive, cutaneous ulceration which presents as ulcerative, pustular, bulluous and vegetative forms, the ulcerative forms being more common. We present the case of 41-year-old woman with Crohn's disease who presented with a rather unusual form of pyoderma gangrenosum, aseptic cutaneous abscess. It was initially misdiagnosed as a fistulous tract in the abdominal wall, but later prompt diagnosis of pyoderma gangrenosum led to a very satisfactory outcome.