假肿瘤性胰腺炎的CT诊断

CT Diagnosis of Pseudotumorous Pancreatitis

目的 :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 0 4～ 1999 0 4CT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。

purpose: To investigate the CT characters of pseudotumorous pancreatitis. Materials and methods: The clinic and CT data of psendotumorous pancreatitis in 19 cases proved by operation and pathology from April 1992 to April 1999 were retropectively anlysed. Results: CT characters 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 pancreatic and bile duct dilated (10/19), bile duct dilated slightly, pancreatic duct which went through the tumorous areas obstructed because of being pressed, but the terminal dilated. (3) Fat around the pancreas was clear, the big vessel transposed, but the phenomena of invading membrane was not demonstrated in all cases. (4) Pseudotumorous pancreatiltis had also acompanied calcification and Pseudocyst. Conclusions: Pseudotumorous pancreatitis has certain characters in CT appearances, it can be made correct diagnosis comnbined with clinical data、B—ultrasonic and ERCP examination etc.