胰胆管十二指肠连接区癌的螺旋CT的表现

Spiral CT Diagnosis for Carcinoma at Pancreaticobiliary Ductal and Duodenal Union

目的探讨胰胆管十二指肠连接区(PDDU)的解剖及连接区癌的病理、CT表现特点与扫描方法。方法对52例经病理证实为PDDU癌的临床及CT图像资料进行回顾性分析。结果螺旋CT诊断PDDU癌47例(乳头型32例,管腔内型13例,混合型2例);主要表现为软组织肿块,十二指肠腔内充盈缺损及局部黏膜破坏和肝内外胆管、胰管、胆总管扩张;5例因扫描方法不当致漏诊、误诊。结论螺旋CT能清晰显示PDDU癌的直接及间接征象,是一种很好的无创伤性检查方法,但正确的扫描方法是提高诊断率的前提条件。

Objective To study the features of anatomy,pathology and CT findings in carcinomas at pancreaticobiliary ductal and duodenal union （PDDU）.Methods CT features of 52 cases were retrospectively studyed and correlated with their pathological characteristics.Results Among 47 cases studied（32 were papilloma,13 were ductal type,and 2 were mixed types）;CT features included masses of soft tissue,localized thickening of duodenal wall and expansion of exterior and interior bile duct,common bile duct and pancreatic duct.5 cases missed or misdiagnosis for inappropriate scanning method. Conclusion CT is one of noninvasive testing methods,which can clearly display the direct and indirect signs of PDDU. But correctly scanning is prerequisite to increasing diagnosis preciseness.