抄録
A 59–year–old woman was refered to our hospital because of the stricture of the main pancreatic duct, which was detected by screening ultrasonography for her lumbago in another hospital. Pancreatic enzymes and tumor markers were normal. Endoscopic retrograde pancreatography showed a stricture of the main duct at the body of pancreas without irregularity. Only endoscopic ultrasonography revealed a mass–like lesion in the parenchyma around the stricture site. Because we were not able to deny possibility of small carcinoma, the pancreatic body including the lesion was segmentally resected. Intraoperative frozen section denied neoplastic lesion, and so, the pancreatic tail was preserved. Histological findings of the resected specimen revealed mild hypertrophy of the ductal wall and infiltration of the inflammatory cells without any evidence of malignancy or pancreatitis. Pancreatic ductal stricture has been regarded as the early manifestation of neoplasms or pancreatitis, and so on, but the benign focal inflammatory change like this case has scarcely been reported.
