胃肠道间质瘤的CT表现

The CT Diagnosis of Gastrointestinal Stromal Tumor

目的：分析胃肠道间质瘤（GISTs）CT征象，评价CT对胃肠道间质瘤良、恶性的诊断价值。方法：回顾性分析8例12个病灶病理证实为GISTs患者的CT的影像学表现。结果：8例12个病灶GISTs发生在胃3个，小肠9个；良性7个病灶，恶性5个病灶。良性肿瘤常密度均匀，边缘清楚；恶性肿瘤常多发，密度欠均匀，边界不清。结论：CT能准确显示GISTs的胃肠道间质瘤形态和大小，对鉴别肿瘤良、恶性具有重要临床价值。

Objective To analyze the imaging features of gastrointestinal stromal tumors （GISTs） on CT and evaluate the value of CT for the diagnosis of malignant and benign GSITs. Methods The CT imaging of 12 lesions of 8 patients with GIST was retrospectively analyzed. The diagnosis of all the cases have been proved pathologically. Results For 12 lesions of 8 patients, 3 lesions occurred in stomach, and 9 in small intestine. 7 of 12 lesions were benign, and 5 were malignant. The benign GISTs typically manifested homogenenous attenuation and were well-circumscribed. However, the malignant GISTs were often multiple, ill-defined and have a heterogeneous attenuation. Conclusion CT can precisely display the shape and size of GISTs, and is of clinically significant value for the differentiation between benign and malignant GISTs.