胃间质瘤与神经鞘瘤的CT诊断与鉴别诊断

CT Diagnosis and Differential Diagnosis of Gastric Stromal Tumor and Neurilemmoma

目的:分析胃间质瘤与神经鞘瘤的CT表现,以提高对二者的鉴别诊断能力。方法:回顾性分析经手术病理证实的20例胃间质瘤及5例神经鞘瘤的临床资料及CT图像,分析肿瘤的位置、大小、生长方式、强化特点等。结果:GS患者以女性多见,好发于胃体大弯侧,可向腔内外生长,呈轻中度均匀性渐进性强化,腔内隆起面可形成溃疡;GIST整体发病年龄较大,密度不均,可有囊变、坏死、钙化,呈不均匀渐进性强化。结论:胃间质瘤及神经鞘瘤CT表现有一定的特征性,CT平扫及增强有助于两者的鉴别诊断。

Objective To analyze the CT findings of gastric stromal tumors and schwannomas in order to improve the ability of differential diagnosis between them.Methods The clinical and CT imaging data of 20 cases of gastric stromal tumors and 5 cases of neurilemmoma confirmed by operation and pathology were retrospectively analyzed.The location,size,growth pattern and enhancement characteristics of the tumors were analyzed.Result GS patients were mostly females.They tended to grow in and out of the large curve of the gastric body.They showed mild to moderate homogeneous progressive enhancement and ulceration on the protuberant surface of the cavity.The overall incidence of GIST was older,with uneven density,cystic degeneration,necrosis and calcification,and showed uneven progressive enhancement.Conclusion The CT findings of gastric stromal tumors and schwannomas have certain characteristics.Plain CT scan and enhancement are helpful for the differential diagnosis of both tumors.