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The radiographic characteristics of the terminal pancreatic and biliary ducts were analyzed by endoscopic retrograde cholangiopancreatography in 25 patients with documented benign stenosis of the papilla of Vater. Demonstration of marked hypertrophy of the distal sphincter, mucosal hyperplasia or mucosal redundancy of the distal common bile duct, dilatation of the ducts, and prolonged retention of contrast media suggest papillary stenosis. The diagnosis of benign papillary stenosis, however, ultimately depends on physiologic measurements and response to therapy.
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