胰腺实性假乳头状瘤的影像学诊断和病理分析

Imaging Diagnosis and Pathologic Analysis of Solid Pseudopapillary Tumors of the Pancreas

目的分析胰腺实性假乳头状瘤(SPTP)的CT和MRI表现,并与病理结果对照分析,旨在提高对该病的认识和诊断。方法回顾性分析13例经手术和病理证实的胰腺实性假乳头状瘤的临床及CT和MRI表现,将CT与MRI表现与临床及病理对照。结果女性10例,男性3例。CT主要表现为囊实性混杂密度影,实性结构边缘分布为主,部分呈乳头状或壁结节样突起,增强后实性部分早期轻度强化,后期呈渐进性强化,囊性部分无强化;MRI表现为肿块在T1WI、T2WI上呈不均匀混杂信号,可识别肿瘤内部的坏死囊变及出血等特异性征象,增强呈渐进性强化。仅1例可见胰管及胆管扩张。结论胰腺实性假乳头状瘤影像学表现具有一定特征性,结合临床特征有助于该病诊断。

Objective To investigate the CT and MR imaging manifestation and analyse the pathological findings of solid-pseudopapillary tumor of pancreas（SPTP）.Methods The findings of CT and MR imaging in 13 cases with pathologically proved of SPTP were reviewed.Results 10 cases were female,3 cases were male. The main manifestations of CT were cystic solid mixed density. And the solid structure is mainly distributed in the edge of toumor, partly in the papillary or wall nodular protrusion.On CT post-contrast scan, solid portions delayed enhanced, cystic portions were not enhanced. Tumors showed low or mixed signal intensities on T1WI and high or mixed signal intensities on T2WI, which can identify of tumor cystic necrosis and hemorrhage and other specific features, showed progressive enhancement on post-contrast scan. 1 cases of pancreatic duct and bile duct dilation.Conclusion There are some characteristics in CT and MRI manifestation of SPTP,combined with the clinical feature will be helpful correctly diagnosed .