title: Pyoderma gangrenosum complicating Crohn's disease.
abstract: Of the many acknowledged systemic complications of inflammatory bowel disease, arthritis, iritis and erythema nodosum are observed most commonly and considered parts of the natural history. Pyoderma gangrenosum is a more ominous, less common but similarly associated complication that classically occurs in the course of ulcerative colitis. Its rarity in Crohn's disease stimulated the following report.
mesh_terms: D000293:Adolescent; D003424:Crohn Disease / Q000150:complications* / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D011711:Pyoderma / Q000150:complications* / Q000473:pathology; D011859:Radiography; D012883:Skin Ulcer / Q000150:complications* / Q000473:pathology