15例胃肠道间质瘤的MRI回顾性分析

Magnetic Resonance Imaging of Gastro-intestinal Stromal Tumor:A retrospective Analysis of of 15 Cases

目的讨论胃肠道间质瘤(GIST)的MRI的影像诊断。方法回顾性分析本院15例经手术及病理证实的GISTMRI影像特征。结果15例GIST中12例边界清晰,可见不完整包膜及肿块内不规则坏死区,直径3～18cm。T1加权图像上呈较低信号或等信号,T2加权图像上呈不均匀等、高信号,增强扫描不均匀较明显强化;3例可见肿块内出血、坏死的MRI信号特点。结论MRI可清楚定位,对临床诊断该病提供了有价值的依据。

Objective To discuss magnetic resonance imaging（MRI） characteristics of gastro-intestinal stromal tumors（GISTs）. Methods A retrospective analysis was made of the data of 15 cases of GISTs eonf＇n＇med by postoperation and pathology. Results Twelve eases of 15 showed a clear boundary, incomplete capsule and irregular tumor necrosis, their diameter ranged from 3 to 18 cm, T1-weighted images showed low or equal signal, T2-weighted images showed asymmetric, high or equal signal, and enhanced scanning significantly enhanced non-uniformity. MRI signals showed necrosis and hemorrhage in 3 cases. Conclusion MRI can clearly locate GISTs,providing a valuable basis for the clinical diagnosis of the disease.