肝脏黏液性囊性肿瘤与囊肿型肝内胆管乳头状肿瘤CT及MRI表现

CT and MRI manifestations of hepatic mucinous cystic neoplasms and cyst-forming intraductal papillary neoplasm of the bile duct

目的对比分析肝脏黏液性囊性肿瘤(MCN)与囊肿型胆管乳头状肿瘤(IPNB)的CT及MRI表现。方法回顾性分析25例MCN和16例囊肿型IPNB(侵袭性10例、非侵袭性6例)的临床病理资料及影像学资料。结果IPNB组与MCN组周围胆管交通、胆管扩张、附壁结节差异有统计学意义(P均<0.001),病灶直径、位置、形状、囊内出血、ADC值差异均无统计学意义(P均>0.05)。IPNB组中,非侵袭性和侵袭性病变间仅病灶直径差异有统计学意义(P=0.032)。结论MCN和囊肿型IPNB的CT及MRI表现具有一定相似性,病灶周围是否有胆管扩张、扩张的胆管是否与病灶相通及病灶内部壁结节对鉴别诊断有重要意义。

Objective To analyze CT and MRI manifestations of mucinous cystic neoplasms (MCN) and cyst-forming intraductal papillary neoplasms of the bile duct (IPNB).Methods Clinicopathological and imaging data of 25 MCN patients (MCN group) and 16 cyst-forming IPNB patients (IPNB group,including 10 invasive IPNB patients and 6 noninvasive IPNB patients) confirmed pathologically were retrospectively analyzed.Results There were significant differences of bile duct dilation,communication with lesions and bile ducts,mural nodules between MCN group and IPNB group (all P <0.001).No difference was found in lesions diameter,location,shapes,intracystic hemorrhage nor ADC value between the two groups (all P >0.05).Only lesion diameter was significantly different between invasive and noninvasive IPNB ( P =0.032).Conclusion CT and MRI features of MCN and cyst-forming IPNB are similar.Dilated bile ducts,communication between dilated bile ducts and mural nodules in lesions have high value in differential diagnosis of these two diseases.