Present state and management of cystic desease of pancreas detected by ultrasonic screening

概要

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Multilocular cyst, unilocular cyst and dilatation of the pancreatic duct were found in 0.23%, 0.72% and 0.46% respectively on ultrasonographic screening. The incidence of unilocular cyst or dilatated pancreatic duct increased with aging and increased sharply in more than 60 years of age. The proportion of unilocular cyst was high in females, while that of dilated pancreatic duct was high in males. Neoplastic diseases were discovered in 0.6% of the cases with cyst or dilatation of the pancreatic duct without solid mass lesion. When the US findings of 104 cases of malignant tumor of pancreas in the past 15 years were studied retrospectively, there were 6 cases in which pancreatic cyst or dilatation of the pancreatic duct had been pointed out before discovery of malignant tumor. In the IPMT or MCT cases it took several years before diagnosis of neoplastic cyst was made, while in carcinoma of the pancreatic duct advanced cancer was discovered within 1 year after these signs appeared. That is, when pancreatic cyst or dilatation of the pancreatic duct appeared for the first time, a close checkup is considered necessary to rule out carcinoma of the pancreatic duct. Even when carcinoma of the pancreatic duct has been negated, there is a possibility of other neoplastic cysts being discovered later. Therefore, regular follow-up observations should be made.
一般社団法人日本消化器がん検診学会の論文