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目的：局限型胰腺炎在影像学上的表现与肿瘤极为相似，本文予其声像图较详细的分析，以探讨良恶性病变的鉴别诊断。共收集了我院诊治的１０例经病理和细胞学证实的局限型胰腺炎。从５个方面，即病灶、病灶以外的胰腺、胰管、胆总管、邻近血管等，回顾性分析其声像图表现。另选２３例经病理证实的胰腺癌作为对照组，从病灶形态、内部回声、均质程度、后方回声改变、内部强回声斑块（可能为胰石或钙化）、扩张的胰管和胆总管的阻塞形态、邻近血管变化等方面对比这两种良恶性病变。研究结果表明胰管和胆总管的阻塞形态、内部强回声斑块等征象有明显差别（前两者Ｐ＜００１，后者Ｐ＜００５；在炎症，两管道多为病灶内阻塞，而癌症则多呈病灶周边阻塞；炎症内部可见到较粗大的强回声结构，而癌症则无此征。因此上述三点在鉴别诊断时应该特别重视
OBJECTIVE: Finite pancreatitis is very similar in imaging features to tumors. In this paper, we give a detailed analysis of its sonography to explore the differential diagnosis of benign and malignant lesions. A total of 10 cases diagnosed by our hospital pathologically and cytologically confirmed localized pancreatitis. From 5 aspects, namely, lesions, lesions outside the pancreas, pancreatic duct, common bile duct, adjacent blood vessels, retrospective analysis of the sonographic findings. Another 23 cases of pathologically confirmed pancreatic cancer as a control group, from the lesion morphology, internal echo, homogeneity, rear echo changes, the internal strong echo plaques (which may be pancreatic or calcification), the expansion of the common bile duct and common bile duct Obstruction morphology, changes in adjacent blood vessels and other aspects of both benign and malignant lesions. The results showed that there was a significant difference between obstructive morphology of pancreatic duct and common bile duct and internal hyperechoic plaque (P <001 for the first two and P <005 for the latter two; , While the cancer is mostly occluded around the lesion; inflammation can be found within the thicker echogenic structure, while the cancer is no sign so the above three points in the differential diagnosis should pay special attention