胃肠道间质瘤的螺旋CT诊断

CT diagnosis of gastrointestinal stromal tumors

目的分析胃肠道间质瘤(GIST)的 CT 表现特点,探讨 CT 对该肿瘤的诊断价值。方法回顾性分析经手术病理证实的 GIST 16例,术前均行 CT 平扫和增强扫描。结果肿物发生部位胃7处,小肠12处,结肠3处。16例 CIST 中良性4例,肿瘤直径≤5.0 cm,边界清楚.密度均匀;恶性12例.肿瘤直径≥7cm,肿瘤边缘有分叶,肿块内有坏死,肿瘤的溃疡大而深,可见周围组织侵犯或远处转移。结论 CT 对 GIST具有较高的诊断价值,可弥补其他影像学检查的局限性,对临床早期诊断和治疗以及评价预后具有重要价值。

Objective To analyze CT features of gastrointestinal stromal tumors（GIST） and to evaluate its value in diagnosis of the disease. Methods Both plain and enhanced CT findings in 16 cases with GIST pathologi-cally-provcd were retrospectively analyzcd. Results The tumors originated from the stomach（ n = 7） ,jejunum（ n = 12） ,ascending colon（ n = 1）. Of 16 GIST,4 were benign and 12 were malignant. In benign GIST,the diameter of the tumor was less than 5cm,with clear margin and homogeneous density. In malignant GIST, the diameter of the tumor was more than 7cm,and the tumors were lobular in shape, with necrosis within the tumor, the tumor had large and deep ulcers invasion of adjacent tissues and metastasis. Conclusion CT is of great value in diagnosis of GIST. It can be considered as a supplement to other examinations and can provide useful information for early diagnosis and for the evaluation of the treament and prognosis.