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目的探讨胃平滑肌肉瘤的影像学表现及鉴别诊断。材料与方法回顾性分析经手术病理或／和活检证实的２１例胃平滑肌肉瘤的影像学表现。结果单发１９例．多发２例。Ｘ线片上腔内型１０例，表现为圆形或半圆形充盈缺损，肿瘤中心出现大而不规则的龛影，腔外型７例，为胃轮廓外压性改变及较大龛影。混合型４例，兼有上述二型表现。ＣＴ上表现为直径为６～１６ｃｍ分叶状肿块，密度不均匀且有不均匀强化，可有邻近侵犯和远处转移。结论胃低张双重造影和ＣＴ扫描密切结合，对提高胃平滑肌肉瘤的诊断和鉴别诊断很有帮助。
Objective To investigate the imaging features and differential diagnosis of gastric leiomyosarcoma. Materials and Methods The imaging findings of 21 cases of gastric leiomyosarcoma confirmed by surgery and/or biopsy were retrospectively analyzed. The results of a single 19 cases. More than 2 cases. There were 10 cases of X-ray upper chamber type, which showed round or semicircular filling defect. The center of the tumor appeared large and irregular shadows. In 7 cases of extraluminal shape, it was the change of gastric contour pressure and larger shadow. Mixed type 4 cases, combined with the above type 2 performance. CT showed a lobulated mass with a diameter of 6 to 16cm, with uneven density and non-uniform enhancement, and may have adjacent invasion and distant metastasis. Conclusion The combination of gastric double angiography and CT scan is very helpful for the diagnosis and differential diagnosis of gastric leiomyosarcoma.