胰腺实性-假乳头状瘤的超声和CT诊断及鉴别诊断

目的探讨超声和CT对胰腺实性-假乳头状瘤的诊断及鉴别诊断依据。方法回顾性分析经手术及病理证实的9例胰腺实性-假乳头状瘤的超声和CT影像表现。结果二维超声瘤体表现为囊、实混合性团块,其中以囊性结构为主5例,实性结构为主1例,囊、实结构比例相近3例。彩色多普勒血流显像(CDFI)4例检出血流信号,其中仅1例血流信号较丰富。CT平扫病灶呈类圆形低密度团块影;增强扫描显示实性部分明显强化,囊性部分各期均无强化。结论胰腺实性-假乳头状瘤超声和CT影像具有一定特征性,有利于诊断及鉴别诊断。

The Diagnosis and Differential Diagnosis of Solid-Pseudopapillary Tumors of the Pancreas by Ultrasonography and CT

Objective:To study the CT and sonographic features of solid-pseudopapillary tumors of the pancreas (SPTP).Methods:The CT and sonographic features of 9 cases of SPTP which were confirmed by operation and pathology were retrospectively analyzed.Results:On B-mode sonographic images,all cases showed solid tumor with cystic component inside.Five cases were mainly composed of cystic parts,three cases were composed of similar proportions of solid and cystic parts,Only one case was mainly composed of solid part.Sufficient color blood flow was showed within solid parts in one patient.On enhanced CT scans,solid portions showed marked enhancement and cystic portions showed no enhancement. Conclusion: Conventional ultrasound combined with color Doppler flowing image and enhanced CT play important roles in diagnosis of SPTP.