胰腺癌与慢性胰腺炎的CT诊断

目的：提高对胰腺疾病的ＣＴ诊断水平。材料与方法：作者根据被证实的１５４例胰腺癌、慢性胰腺炎及其他疑误诊为前两种疾病病例的ＣＴ资料，对４５个项目，３８个ＣＴ征象进行观测、统计与分析。结果：二者诊断与鉴别的主要征象是：（１）病变区胰腺局限或弥漫肿大与密度异常；（２）有无扩张的胆总管（或壶腹）突然性狭窄截断与胰周大血管被包埋、管径增粗、癌栓，腹部淋巴结肿大、肝转移；（３）有无沿胰管走向分布的钙化与扩张胰管，扩张胰管的形态与贯通病变区的情况；（４）胰腺囊肿的发生频率、部位，与胰腺的轮廓关系。结论：根据前述要点，参考其他征象，密切结合临床，ＣＴ诊断正确率达９０％以上。

CT diagnosis of pancreatic carcinoma and chronic pancreatitis

Purpose: To improve the diagnostic accuracy of pancreatic carcinoma and chronic pancreatitis. Materials and methods: The CT findings of 154 cases with pancreatic carcinoma, chronic pancreatitis and misdiagnosed other pancreatic diseases proven clinically and pathologically were analysed. Slice thickness of 8mm and slice interval of 8mm were used and thin section scan and enhancement study were performed in some cases. Results: The main signs in diagnossi and differential diagnosis between pancreatic carcinoma and chronic pancreatitis included: (1) focal or diffuse enlargement and density abnormality of pancreas; (2) dilated common bile duct was suddenly obstructed, peripancreatic blood vessels were invaded and cancerous thrombus was revealed, enlargement of abdominal lymph nodes and metastasis in the liver were discovered; (3) calcium deposit in the pancreatic duct area and dilated pancreatic duct which passed through the lesion or not; (4) presence and location of pancreatic cyst and its relationship to pancreatic contour. Conclusion: CT is the imaging modality of choice in the diagnosis of pancreatic carcinoma and chronic pancreatitis at present. The diagnostic accuracy of CT was over 90% in this series.