Peroral Micro‐Pancreatoscopy (PMPS) for the Diagnosis of Pancreatic Diseases

Abstract

Abstract: In order to observe the inside of the main pancreatic duct endoscopically, we have performed pancreatoscopy using a microfiberscope with an external diameter of 0.75 mm which was inserted even into the undilated duct via a canula for ERCP without papillotomy. The peroral micro‐pancreatoscopy (PMPS) was carried out on 38 patients (16 cases of tumor, 21 of chronic pancreatitis and 1 of a cyst) and was successful in 33 patients (87%). In patients with cancer, rough elevation, redness, bleeding, or ulceration were recognized on the mucosa of the stenotic and the obstructed duct. In chronic pancreatitis, protein plugs were most frequently observed floating in the juice or attached to the ductal wall; some stones were also found in two patients. PMPS is one of the most useful techniques for the diagnosis of the earlier stages of pancreatic diseases.