胰腺实性假乳头状瘤的影像学表现

目的:探讨胰腺实性假乳头状瘤(SPT)的CT及MRI影像学特征。方法:回顾性分析32例经手术病理证实的胰腺SPT患者的CT和MRI资料,总结该肿瘤的影像学特点。结果:32例SPT均为单发,29例为类圆形,3例呈分叶状。CT平扫囊性部分呈水样低密度,实性部分呈软组织等低密度;MRI平扫T1WI呈混杂稍低信号,T2WI以高信号为主。增强扫描实性部分及包膜可见渐进性延迟强化,囊性部分未见强化。结论:胰腺SPT的CT和MRI表现具有一定特征性,对术前诊断SPT具有重要价值。

The Imaging Features of Solid Pseudopapillary Tumor of the Pancreas

Objective To evaluate the imaging characteristics of solid pseudopapillary tumor of the pancreas(SPT).Methods CT and MR data of 32 patients with SPT confirmed pathologically were retrospectively analyzed.Results 32 Cases were solitary,29 cases were oval and 3cases were foliform.In CT plain scanning,cystic component showed low-density solid component showed equal-density.In MRI plain scanning tumor showed mixed heterogeneous signal on T1WI and mainly hyper intense on T2WI.In enhancement scanning,solid and capsular showed enhancement in venous phase and balance phase,cystic showed no enhancement.Conclusion SPT has certain characteristics on CT and MRI,which is helpful for accurate preoperative diagnosis.