根据日本胰脏病学会对胰腺肿瘤组织学分类 ,胰管内肿瘤和粘液性囊性肿瘤属于胰腺外分泌肿瘤的两种不同类型。胰管内肿瘤以主胰管或胰管分支扩张并分泌大量粘液为特征 ,而粘液性囊性肿瘤的囊腔可单房或多房 ,并有较厚的纤维性包膜覆盖囊壁。这两类肿瘤的鉴别和自身良恶性的区分 According to the Japanese Society for Pancreatic Diseases histological classification of pancreatic tumors, pancreatic duct tumors and mucinous cystic tumors are two different types of pancreatic exocrine tumors. Tumors in the pancreatic duct are characterized by the expansion of the main pancreatic duct or pancreatic duct and the secretion of a large amount of mucus. The mucous cystic tumour can have a single chamber or multiple chambers with a thick fibrous capsular covering the cyst wall. The distinction between these two types of tumors and their own distinction between benign and malignant