胃间质瘤的CT诊断12例分析

CT diagnosis of gastric stromal tumor:12 cases of analysis

目的:探讨胃间质瘤的CT表现,以提高诊断正确率。方法:收集经过病理检查证实的12例胃间质瘤患者的临床资料,对患者行16层CT平扫和双期增强检查的结果进行分析。结果:12例胃间质瘤向腔外生长者3例,向腔内生长者6例,同时向腔内、腔外生长者3例;肿瘤多垂直胃壁生长且境界清晰或较清晰。6例良性肿瘤直径多小于5 cm并多向腔内生长,增强扫描多为轻、中度强化;6例恶性肿瘤直径均大于5 cm,多向腔外或同时向腔内、腔外生长,增强扫描多为中度、明显强化。结论:胃间质瘤CT表现有一定特征,有重要诊断价值,不典型病例仍需依靠病理诊断。

Objective： To investigate the CT features of gastric stromal tumors and improve its diagnostic accuracy.Methods： Retrospective analysis was performed in 12 pathologically proven cases of gastric stromal tumors.Results： Plain CT and dual-phase contrast enhanced 16-slice spiral CT was performed in 12 cases with gastric stromal tumors.Of all 12 cases,there were 3 cases with extra luminal growth,6 cases with intra luminal growth,3 cases with intra-extra-luminal growth,most cases with vertical gastric wall growth and clear outline.Benign tumor was seen in 6 cases with its diameter mostly less than 5cm and intra luminal growth was mildly or moderately strengthened.Malignant tumor was seen in other 6 cases with its diameter bigger than 5cm and extra luminal growth or intra-extra-luminal growth was moderately or obviously strengthened.Conclusion： CT imaging features of gastric stromal tumors are characteristic,which may play an important role in correct diagnosis.Atypical tumors needs to be confirmed by pathology.