Pyoderma gangrenosum as a cutaneous manifestation of diverticular disease.

We have described a case of pyoderma gangrenosum due to diverticular disease. The patient was an elderly woman with a 3-month history of cutaneous disease without associated gastrointestinal complaints. There was no history of inflammatory bowel disease, malignancy, or seropositive arthritis. Evaluation revealed a retroperitoneal abscess due to a ruptured diverticulum. Surgical resection of the affected colon led to rapid and complete resolution of all symptoms. Pathologic examination of resected tissue showed diverticulitis without evidence of chronic inflammatory bowel disease.