胃间质瘤超声造影表现与良恶性的相关性分析

摘要

Objective To explore the value of contrast-enhanced ultrasound (CEUS) in differential diagnosis of benign and malignant gastric stromal tumors.Methods Referring the WHO criteria of GIST prognosis groping,the 17 patients with gastric stromal tumors which pathologically confirmed were divided into benign and malignant groups.A retrospective analysis of conventional 2D-ultrasonography and CEUS was performed.Results Compared with the benign gastric stromal tumors,the malignant umor were showed larger maximum diameter [(8.53±3.64) cm vs (3.64 ± 2.31) cm],irregular shape (4/6,66.67 ％ vs 1/10,10.00 ％),large and irregular vessels in arterial phase (5/6,83.33 ％ vs 1/10,10.00 ％) and heterogeneous enhancement in parenchymal phase(5/6,83.33 ％,vs 0/10,0.00 ％) (P ＜0.05).The differential diagnosis accuracy of CEUS for benign and malignant gastric stromal tumors was higher than conventional 2D-ultrasound(87.50％ vs 81.25％).Conclusions CEUS can more accurately than conventional 2D-ultrasound in discriminating benign and malignant gastric stromal tumors.%目的 探讨超声造影(CEUS)在鉴别胃间质瘤良恶性中的应用价值.方法 参照2013年版WHO胃肠间质瘤预后分组标准[1],将17例经病理证实的胃间质瘤患者进行良恶性分组.回顾性分析良恶性两组的常规二维超声和超声造影表现.结果 恶性胃间质瘤与良性胃间质瘤相比最大径更大[(8.53土3.64)cm vs (3.64±2.31) cm],形状多不规则(4/6,66.67％ vs 1/10,10.00％),超声造影动脉期多可见粗大不规则的血管(5/6,83.33％ vs 1/10,10.00％),实质期多不均匀增强(5/6,83.33％ vs 0/10,0.00％) (P值均＜0.05).超声造影对良恶性胃间质瘤鉴别诊断的准确度高于常规二维超声(87.50％ vs 81.25％).结论 超声造影可较常规二维超声更加准确地鉴别胃间质瘤的良恶性.