Pancreatic duct: US-guided percutaneous opacification.

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Abstract
Percutaneous pancreatography was attempted in 28 patients. In 18 cases, the examinations were performed after failure of endoscopic retrograde cholangiopancreatography (ERCP); in ten patients, ERCP was not attempted. Under real-time ultrasonic guidance, a 22-gauge needle was inserted into the pancreatic duct, which ranged in size from 3 to 15 mm. After aspiration of pure pancreatic juice, 10-20 ml of contrast medium was injected under fluoroscopic control. The examination was successful in 25 patients. The only significant complication was bile leakage in a patient with obstructive jaundice. Of the six patients who subsequently underwent surgery, evidence of the puncture site was present in only one.