Portal vein gas developed in a patient with granulomatous colitis following air-contrast barium enema. No symptomatology or morbidity could be attributed to the portal vein gas in this patient.

Abstract.A case of arteriovenous malformation of the hand involving bone is presented. Changes in the involved bone may be characteristic but are usually not diagnostic. The value of arteriography in the diagnosis of arteriovenous malformation is emphasized, since biopsy may be hazardous and even misleading.

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