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目的:探讨成人多发胆管错构瘤的CT、MRI特点,以提高对该病的影像认识及诊断水平。方法:回顾性分析12例经穿刺活检病理证实的成人多发胆管错构瘤的临床及影像资料,总结其影像学特征。结果:胆管错构瘤的CT平扫表现为肝实质多发低密度灶,弥漫或散在分布,境界模糊,形态多样,病灶直径多小于15 mm,增强扫描无明显强化;MRI扫描T1WI序列病变信号低于正常肝实质,T2WI序列病灶显示更清晰,呈明显高信号,病变数量多于CT和T1WI平扫,增强扫描多数病灶无强化,少量病灶呈结节状或轻度环状强化;磁共振胰胆管造影(MRCP)图像显示肝内多发类囊状高信号灶,沿胆管树分布,与胆管树不相通。结论:成人多发胆管错构瘤的CT、MRI具备一定特征性,但仍需与Caroli病、肝脏囊性转移瘤、多发肝囊肿、多囊肝等肝脏囊性病变鉴别。
Objective: To explore the CT and MRI features of adult multiple bile duct hamartoma in order to improve the imaging knowledge and diagnosis of this disease. Methods: The clinical and imaging data of 12 cases of adult cholangiocarcinoma confirmed by biopsy were analyzed retrospectively. The imaging features were summarized. Results: CT scan of bile duct hamartoma showed multiple low-density lesions of hepatic parenchyma with diffuse or scattered distribution, blurred state and diverse shapes. The diameter of lesion was less than 15 mm, and the enhanced scan had no obvious enhancement. The lesion signal of MRI scan T1WI sequence was low In normal liver parenchyma, lesions of T2WI showed clearer and higher signal, more lesions than those of CT and T1WI. Most of lesions did not show enhancement and most of lesion showed nodular or mild annular enhancement. Cholangiography (MRCP) images showed multiple intrahepatic cystic hyperintensities along the biliary tree, which were not related to the biliary tree. Conclusion: CT and MRI in adult patients with multiple cholangiocarcinomas have certain characteristics, but they still need to be distinguished from other cystic lesions such as Caroli disease, cystic liver metastases, multiple hepatic cysts and polycystic liver disease.