假肿瘤性胰腺炎的CT诊断

探讨假肿瘤性胰腺炎的CT影像特征。材料与方法回顾性分析19例1992-04～1999-04CT扫描后细针穿刺活检/手术病理证实的假肿瘤性胰腺炎的临床及CT资料。结果假肿瘤性胰腺炎的CT表现如下(1)胰腺内肿块，单发多见(18/19)，呈等密度或略低密度，无论平扫增强均与正常胰腺分界不清；(2)胆胰管扩张(10/19)，胆管扩张程度较轻，胰管在通过肿块区受压变窄，其远端扩张；(3)胰周脂肪层清晰，胰周大血管可受压移位，但未见包埋侵犯现象；(4)假肿瘤性胰腺炎可伴有胰腺内钙化及假性囊肿。结论假肿瘤性胰腺炎的CT影像有一定特征，结合临床及B超、ERCP等可做出准确的诊断。

CT Diagnosis of Pseudotumorous Pancreatitis

purpose: To investigate the CI characters of pseudotumorous pancreatitis. Materials and methods: The clinic and CT data ofpsendotumorous pancreatitis in 19 cases proved by operation and pathology from April 1992 to April 1999 were retropectively anlysed. Results: CTcharacters of pseudotumorous pancreatitis demonstrated as such: (1) Masses presented as equal or slightly lower density within a normal pancreas,most were singular (18/19), its boundary was nuclear to the remainder of the normal pancreas in spite of enhancing scan levels. (2) The pancreaticand bile duct dilated (10/19), bile duct dilated slightly, pancreatic duct which went through the tumorous areas obstructed because of beingpressed, but the terminal dilated. (3) Fat around the pancreas was clear, the big vessel transposed, but the phencrmena of invading membrane wasnot dermonstrated in all cases. (4) Pseudoturmorous pancreatiltis had also acompanied calcification and Pseudocyst. Conclusions: Pseudotumorouspancreatitis has certain characters in CT appearances, it can be made correct diagnosis ccmnbined with clinical data、B-ultrasonic and ERCP exarmi-nation etc.