胰腺腺泡细胞癌的影像学表现与病理对照  

CT and MRI features of acinar cell carcinoma of pancreas with pathological correlation

作　　者：胡敏霞[1] 赵心明[1] 周纯武[1] 

机构地区：[1]北京协和医学院,中国医学科学院肿瘤医院影像诊断科,北京100021

出　　处：《放射学实践》2011年第4期430-433,共4页Radiologic Practice

摘　　要：目的:分析胰腺腺泡细胞癌(ACC)的CT和MRI表现,以提高对该病影像表现的认识。方法:回顾性分析经手术病理证实的胰腺腺泡细胞癌4例的CT和MRI表现,并与病理结果对照分析。结果:胰腺腺泡细胞癌均为单发肿瘤,肿瘤平均最大径为4.9 cm,2例位于胰头部,2例位于胰腺体尾部。3例形态不规则,呈浸润性生长;1例呈卵圆形,见完整包膜。4例肿瘤均以实性成分为主,1例可见出血,CT或MRI增强扫描各期实性成分轻度强化,其强化程度均低于周围胰腺组织,包膜强化。2例伴胰管扩张,其中1例伴低位胆管梗阻,1例伴肝转移。镜下见肿瘤细胞被细薄的纤维血管间质分隔呈腺泡状或条索状排列。结论:胰腺腺泡细胞癌的CT和MRI表现具有一定的特征性,认识该病的影像表现有助于正确诊断。Objective：To analyze the CT and MRI features of acinar cell carcinoma（ACC） of pancreas in order to improve the knowledge of this disease.Methods：The CT and MRI findings in 4 cases with pancreatic ACC proved by surgery and pathology were retrospectively analyzed and the imaging findings were correlated with pathology.Results：All of the pancreatic ACC were manifested as a solitary mass,the mean maximal diameter was 4.9cm.2 masses were located in the pancreatic head,the other two in the pancreatic body-tail.The shape were irregular with an infiltrative margin in 3 masses and ovoid with a complete capsule in 1 case.All of the 4 masses were mainly solid in component with mild to moderate enhancement after contrast,which was less intense than the surrounding normal pancreatic parenchyma and had a thin and enhanced capsule;intra-tumoral hemorrhage was seen in 1 case.Pancreatic ductal dilation were seen in 2 cases,of which,1 case showed obstruction of lower biliary tract.Liver metastasis was assessed in 1 patient.Acinar or cord-like arrangement of tumor cells separated by thin fibrovascular septa were seen under microscope.Conclusion：Certain characteristic CT and MRI features could be revealed in pancreatic ACC.Improvement of the knowledge of imaging is helpful for the diagnosis of this disease.

关 键 词：胰腺肿瘤 体层摄影术 X线计算机 病理学 

分 类 号：R735.9[医药卫生—肿瘤]