胃神经鞘瘤的CT表现及误诊分析

CT findings and misdiagnosis analysis of gistric schwannoma

目的探讨胃神经鞘瘤的CT表现并分析其误诊原因,以提高对该病的术前诊断准确率。方法回顾性分析近10年来经手术病理证实的15例胃神经鞘瘤的临床特征及CT表现,结合相关文献进行综合分析。结果 15例肿瘤患者中,男3例,女12例,年龄最大者61岁,最小者33岁,中位年龄53岁。10例位于胃体部大弯侧,2例位于胃底部,3例位于胃窦部。15例肿瘤中14例行CT平扫及增强扫描,1例只行CT平扫。15例肿瘤均为单发类圆形肿块,密度均匀,无囊变坏死;增强扫描后动脉期呈均匀轻度强化,静脉期进一步强化,延迟期轻度持续强化。结论胃神经鞘瘤的CT影像表现具有一定特点。肿瘤好发于胃体部,呈单发类圆形肿块,密度均匀;增强扫描后呈渐进性均匀强化。

Objective To explore the CT findings of gistric schwannoma and analyze the misdiagnosiscauses to improve the diagnosis accuracy of the disease. Methods The findings of CT imaging in 15 cases withpathologically proved gistric schwannoma were reviewed restrospectively,and relevant literatures were reviewed.Results In those 15 cases,3 were men,12 were women,the oldest was 61,the youngest was 33,and the medi-an age was 53.10 cases were located in the greater curvature side of gastric body,2 cases in the gastric cardia,3 cases in the diatal.14 cases underwent CT plain and contrast-enhanced scanning while 1 case only underwent CTplain. The 15 cases were single,round lumps with equable density. The performance of 14 routine enhancementscan was characterized by mild uniform strengthing of The arterial period,further Strengthening of the venousphase,and mild prolonged delay. Conclusion The CT fingings of gistric schwannoma has certain characteristics.It usually occurred in gastric body with single type of circular lump and often presents with equable density. Homo-geneous progressive enhancement on dynamic CT is a characteristic finding of gistric schwannoma.