摘要
目的探讨胰腺实性假乳头状瘤(SPT)的CT和MRI表现。方法回顾性分析9例病理证实的胰腺SPT的CT和MRI表现。结果肿瘤囊实性比例相当4例,实性和囊性为主各4例和1例。CT平扫囊性呈低密度,实性呈等低密度。钙化2例。MRI上实性结构T1WI低信号,T2WI高信号。动脉期实质部分不同程度强化,门脉期及延时期持续强化。病灶包膜完整,延迟强化。结论胰腺SPT影像学表现有一定的特征。当胰腺出现包膜清晰的囊实性肿瘤,实质部分呈不同程度强化时,结合病人的临床资料,应考虑胰腺SPT的诊断。
Objective To investigate the CT and MR imaging manifestation of solid-pseudopapillary tumor （SPT） of pancreas. Methods The findings of CT and MR imaging in 9 cases with pathoLogicaLLy proved SPT of pancreas were reviewed retrospectively. Results Tumors contained similar proportion of solid and cystic part in 4 cases, mostly solid components in 4 cases and mostly cystic components in 1 case. Solid portions within the neoplasm demonstrated isoor hypo-attenuation while cystic portions demonstrated hypo-attenuation on pre-contrast CT. CT revealed calcification in 2 cases. Solid portions revealed long T1 and long T2 on pre-contrast MR scans. On post-contrast scan, at the arterial phase, solid portions demonstrated variously enhancement. At the portal and delayed phases, solid portions were enhanced continuously in all cases, approaching normal parenchyma of pancreas. All tumors had well-defined capsule margins which were marked enhanced on delayed phase. Conclusion The CT and MRI findings of SPT of pancreas are characteristic. SPT should be suspected if a welldefined large solid cystic pancreatic mass with solid portions enhanced variously on contrast enhanced CT and MRI, when combined with patients＇ clinical information.
出处
《中国医学影像技术》
CSCD
北大核心
2006年第5期751-753,共3页
Chinese Journal of Medical Imaging Technology
关键词
胰腺肿瘤
体层摄影术
X线计算机
磁共振成像
Pancreas neoplasms
Tomography, X-ray computed
Magnetic resonance imaging
