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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GIST32例,术前均行CT平扫和增强扫描,15例行胃肠道气钡双重造影检查。结果肿瘤发生于胃18例,空肠4例,回肠3例,食管和肠系膜各2例,升结肠、直肠和大网膜各1例。32例CIST中,良性12例,肿瘤直径≤5.0cm,边界清楚,密度均匀;恶性20例,肿块直径≥7cm,肿瘤边缘有分叶,肿块内有坏死,肿瘤的溃疡大而深,周围组织侵犯或远处转移。本组CT定位准确度为96.9%(31/32),CT判断恶性准确度为93.8%(30/32)。结论CT对GIST具有较高的诊断价值,可弥补X线钡餐造影的局限性,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 the CT features of gastrointestinal stromal tumors (GIST) and investigate the diagnostic value of CT in this tumor. Methods Retrospective analysis of 32 cases of GIST confirmed by surgery and pathology, preoperative CT scan and enhanced scan, 15 cases of gastrointestinal barium double contrast examination. Results The tumors occurred in 18 cases of stomach, 4 cases of jejunum, 3 cases of ileum, 2 cases of esophagus and mesentery, 1 case of ascending colon, rectum and omental. 32 cases of CIST, benign in 12 cases, the tumor diameter ≤ 5.0cm, the border is clear, uniform density; malignant in 20 cases, tumor diameter ≥ 7cm, tumor edge lobulation, tumor necrosis, large and deep tumor ulcers, the surrounding tissue Invasion or distant metastasis. The accuracy of this group was 96.9% (31/32) for CT localization and 93.8% (30/32) for malignancy. Conclusion CT has a high diagnostic value for GIST, which can make up for the limitations of X-ray barium angiography and is of great value in the early diagnosis and treatment of clinical and the evaluation of prognosis.