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目的评价超声内镜(endoscopicultrasonography,EUS)诊断胃肠道间质瘤(gastrointestinalstro-maltumors,GIST)的临床价值。方法回顾分析25例GIST的临床表现和EUS特征。结果25例患者中,18例直径小于3cm的GIST边缘规整,呈低回声匀质肿块,符合良性肿瘤特征,另外7例直径大于3cm的GIST中,5例患者的EUS图像呈不均匀声像伴无回声区,其中3例患者出现上消化道出血,另外2例直径为9cm和12cm者边缘不规整,4例内镜下黏膜表面呈溃疡样病变,所有7例患者术后病理和免疫组化均证实为GIST,2例为恶性肿瘤。结论EUS对GIST的诊断很有帮助,并提供临床医师确定下一步处理。
Objective To evaluate the clinical value of endoscopic ultrasonography (EUS) in the diagnosis of gastrointestinal stromal tumors (GIST). Methods The clinical manifestations and EUS features of 25 cases of GIST were retrospectively analyzed. Results Of the 25 patients, 18 of the GISTs with a diameter of less than 3 cm were well-defined and hypoechoic masses consistent with benign tumor characteristics. In 7 other GISTs with a diameter greater than 3 cm, the EUS images of 5 patients showed uneven imaging. In the echo-free zone, upper gastrointestinal hemorrhage occurred in 3 patients, irregularities in the other 9 patients with 9cm and 12cm in diameter, and ulcer-like lesions in 4 patients in the endoscopic mucosa. Postoperative pathology and immunohistochemistry in all 7 patients. All were confirmed as GIST and 2 cases were malignant. Conclusion EUS is helpful in the diagnosis of GIST and provides the clinician with the next step.