A 78-year-old man presents with a 2-month history of fever and intermittent abdominal pain. He develops peritoneal signs and at laparotomy is found to have an area of infarcted bowel. Biopsy shows inflammation of small-to medium-sized muscular arteries.
Churg-Strauss syndrome Cryoglobulinemic vasculitis. Temporal arteritis Polyarteritis nodosa