肿块样胃神经鞘瘤的CT征象分析

目的探讨肿块样胃神经鞘瘤的多层螺旋CT表现。方法回顾性分析10例胃神经鞘瘤的CT征象。所有患者均行CT平扫及增强扫描。CT评价征象主要包括大小及数目、部位、轮廓、生长方式、病灶边界、增强方式及程度、是否存在表面凹陷、黏膜是否完整。所有病例经外科手术病理证实。结果 10例均为单发,最大者直径约为5.7cm,最小者2.3 cm。10例为圆形或卵圆形,1例可见轻度分叶。2例为腔内生长,1例呈腔外生长,7例为混合型生长,所有病灶均边界清楚。8例动脉期无明显强化,2例动脉期呈轻度强化,门脉期所有病灶持续强化。4例病灶可见表面溃疡形成。结论肿块样胃神经鞘瘤CT表现具有一定的特征性,对临床诊断有指导意义。

Analysis On CT Features of Tumor-like Gastric Schwannomas

Objective To analyze CT imaging features of tumor-like gastric schwannomas.Methods Ten patients with gastric schwannomas were retrospectively analyzed.All were scanned with pre-and pro-enhanced CT.Analysis of the CT findings included evaluation of the volume,number,location,contour, growth pattern,border,enhancement pattern,and enhancement grade as well as the presence of surface dimpling,integrity of overlying mucosa.All cases were confirmed by pathology.Results In every case,simple tumor was present.The largest was about 5.7cm in the diameter,the smallest was 2.3cm.All tumors were round or oval,and one tumor was slightly lobulated.Endoluminal growth pattern was defined in two cases,exoluminal growth pattern was defined in one case,and a mixed growth pattern was noted in the rest.The borders of tumors were clear.In arterial phase,no visible enhancement was present in eight cases and mild enhancement in two cases.All cases were constantly enhanced in portal phase.Superficial ulcers were present in four cases.Conclusion CT findings of tumor-like gastric schwannomas are distinctive to a certain degree.It can be used to guide clinical therapy.