摘要
目的:探讨胰腺实性-假乳头状瘤(SPTP)的CT、MRI表现。方法:回顾性分析经手术病理证实的11例SPTP患者的影像资料。其中7例行CT平扫及增强检查,2例仅行CT增强检查,另外2例同时行CT增强、MRI平扫及增强检查。结果:8例肿瘤位于胰腺头颈部,2例位于胰腺体部,1例位于胰腺尾部。病灶均为圆形或类圆形,边缘规则,边界清晰;直径1.8～13.2cm,平均8.0cm。1例肿瘤以实性成分为主,2例以囊性成分为主,8例囊、实成分比例相仿。CT平扫肿瘤密度不均匀,动态增强后强化不均匀,包膜及实性成分呈渐进性强化,即动脉期呈轻中度强化,门静脉期强化程度高于动脉期,但均低于正常胰腺组织,囊性成分、钙化及出血均不强化。MRI平扫信号混杂,增强时呈不均匀中等度延迟强化。结论:SPTP是一种好发于年轻女性,体积较大,CT、MRI表现为囊实混合性、有完整包膜、延迟逐渐充填性强化的肿块,认识其特征性表现有助于术前做出正确诊断。
Objective： To analyze the imaging features of solid pseudopapillary tumors （SPTP） of the pancreas on computed tomography （CT） and Magnetic Resonance Imaging （MRI）. Method： Retrospectively analyze the image data of a total of 11 consecutive cases with surgically and pathologically confirmed SPTP of the Pancreas. Among them,7cases underwent unenhanced and enhanced CT scan, 2 cases only enhanced CT, the other 2 cases at the same time enhanced CT, plain and contrast enhanced MRI. Results： 8 cases of tumor in the pancreas head and neck, 2 cases in the body, 1 case in the tail. The lesions are round or oval, edge rules, clear boundaries; diameter 1,8-13.2 cm, an average of 8.0 cm. 2 tumors was predominantly composed of cystic portions, 8 tumors were composed of similar proportions of solid and cystic portions, and 1 tumors were mainly composed of solid potions All tumors showed mixed density in CT pre-contrast scan, solid portions and capsule of the tumors were delayed enhanced in post-contrast scan, the arterial phase showed mild to moderate enhancement, the degree of enhancement of the portal venous phase high than the arterial phase but were lower than normal pancreatic tissue, the cystic part, calcification and hemorrhage were not enhanced. Tumors showed mixed signal on MR1. On TI WI mainly is iintensity; on T2W1 mainly slightly high signal, on post-contrast scan, solid portions were uneven medium delayed enhancement. Conclusion： Pancreatic solid pseudopapillary tumor is a larger more commen in young women, CT and MRI manifestations of cystic and solid mixed with complete capsule, delayed enhanced gradually filling mass, recognizing the performance of its characteristic conducive to clinical make a correct diagnosis before surgery.
出处
《CT理论与应用研究（中英文）》
2013年第1期161-166,共6页
Computerized Tomography Theory and Applications
关键词
胰腺肿瘤
磁共振成像
体层摄影术
X线计算机
pancreas neoplasms
magnetic resonance imaging
tomography
X-ray computed
