摘要
目的:探讨胰腺实性假乳头状瘤(SPTP)的CT及MRI表现,以提高对该病的诊断及鉴别诊断水平。方法:回顾性分析18例经手术病理证实的胰腺实性假乳头状瘤的临床资料、CT及MRI特点。结果:10例仅接受CT检查,4例仅接受MRI检查,4例同时接受CT及MRI检查。18例中胰头颈部5例,胰体尾部13例。13例肿瘤边缘规则,5例不规则。14例行CT平扫与增强扫描,均表现为囊实混合型肿块,平扫呈等或低密度,动脉期呈轻至中度强化,门脉期及延迟期强化程度增加并呈持续渐进性强化,囊性部分均未见强化;5例肿瘤局部包膜不完整;5例出现颗粒状、点条状或蛋壳状钙化。8例行MRI平扫及增强,表现为囊实混合型肿块,其中4例肿瘤内可见出血,3例包膜不完整,1例压迫胆总管致肝内外胆管及胰管明显扩张。结论:胰腺实性假乳头状瘤的CT及MRI表现具有一定的特征性,其影像学有助于SPTP的术前诊断。
Objective:To investigate the CT and MRI imaging manifestation of solid-pseudopapillary tumor of pancreas(SPTP)and to improve the diagnostic accuracy of the lesion.Methods:A retrospective analysis was performed on the comprehensive manifestations of CT,MRI and clinical information of 18 cases of SPTP confirmed by pathology and surgery.Results:13 cases were examined with CT,8 cases were examined with MRI and 4 cases were examined with both CT and MRI.The patients included 3 male and 15 females with mean age of33 years(range 17~63).The mean diameter of tumor was 6.0 cm.The lesions were located in the pancreatic head in 5 cases,in the pancreatic tail in 13 cases.The tumors had regular shape in 13 cases,irregular shape in 5 cases.15 cases of plain and enhanced CT scan showed cystic-solid tumors,the solid part of SPTP was mildly enhanced during arterial phase,and it was progressively filled during portal venous phase and equilibrium phase.The cystic part was not enhanced.The capsule of 5 cases was incomplete.5 cases presented as granular calcification.8 cases were examined by plain and enhanced MRI and presented cystic-solid tumors.4 cases appeared hemorrhage with incomplete capsule in 3 cases.1 case located in the pancreatic head leading to the secondary ducts dilatations.Conclusion:There are some characteristics in the CT and MRI manifestations of SPTP and the comprehensives analysis of imaging manifestations of the lesion has very important valuable for accurate diagnosis and differential diagnosis.
作者
王月波
陈光文
蒲红
WANG Yuebo;CHEN Guangwen;PU Hong(Department of Radiology,Sichuan Academy of Medical Science&Sichuan Provincial People’s Hospital,Chengdu 610072,China)
出处
《CT理论与应用研究（中英文）》
2019年第3期363-369,共7页
Computerized Tomography Theory and Applications
关键词
胰腺实性假乳头状瘤
影像学表现
鉴别诊断
solid pseudopapillary tumor of pancreas
imaging manifestation
differential diagnosis
