2017 Volume 91 Issue 1 Pages 85-89
We report the differential diagnosis between benign and malignant for branch duct intraductal papillary mucinous neoplasm (BD-IPMN) by endoscopic ultrasonography (EUS) . The subjects were 44 patients consist mucin plug 9 cases, granule 11 cases, and mural nodule 24 cases. In the mucin plug group, the operation was one case, and that was benign. In the granule group, the operation was 4 cases, and all were benign. In mural nodule group, the operations were 15 cases, and malignant were 6 cases. The nodule was higher with a malignancy than benign. Accuracy was 96.9% when we assumed cut off level of nodule 7mm. The nodule was seen only in cyst diameter 20mm size or more. In mucin plug and granular group, follow-up was proper. In mural nodule group, an operation is recommended in case with more than 7mm of nodule height. Cyst diameter might have a nodule in case more than 20mm, and EUS was recommended.
