[Crohn disease: morphologic findings of extra-intestinal disease manifestations]

Extraintestinal manifestations occur frequently in patients with Crohn's disease. The spectrum of extraintestinal symptoms reported associated with Crohn's disease involves many organ systems. Commonly recognized extraintestinal manifestations include dermatologic, oral, ocular, skeletal, vascular, hepatobiliary, pancreatic, and pulmonary. Morphological findings on extraintestinal manifestations (erythema nodosum, pyoderma gangrenosum, erythrodermia--granulomatous periostitis and synovitis--granulomatous sialadenitis, aphthous stomatitis--fibrous alveolitis) in Crohn's disease are reported and discussed.