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目的：提高胃平滑肌类肿瘤的ＣＴ诊断水平。材料和方法：对经胃肠造影、超声、内窥镜和ＣＴ检查，并经手术证实的２５例胃平滑肌瘤和平滑肌肉瘤进行回顾性对比分析。结果：胃肠造影、胃镜能多体位动态观察胃腔内肿瘤的形态、表面情况。ＣＴ图像可显示完整的胃壁外和胃腔内肿瘤的状态、大小，与邻近脏器有无压迫、浸及，有无胃周围及腹膜后淋巴结和肝脏转移等。结论：以下情况应进行ＣＴ检查：对于胃壁外生长型肿瘤；超声对于５ｃｍ以上肿瘤，容易误诊为肝或脾脏肿瘤者；胃镜显示胃壁受压，提示胃壁外肿瘤者
Objective: To improve CT diagnosis of gastric smooth muscle tumors. Materials and Methods: Retrospective comparative analysis was performed on 25 cases of gastric leiomyoma and leiomyosarcoma treated with gastrointestinal angiography, ultrasound, endoscopy, and CT examination and confirmed by surgery. Results: Gastrointestinal angiography and gastroscope can dynamically observe the morphology and surface conditions of gastric cavity tumors. The CT image can show the status and size of the complete out-of-stomach and intra-gastric tumors, and whether they are oppressed or infiltrated with adjacent organs, with or without gastric and retroperitoneal lymph nodes and liver metastases. Conclusions: CT examination should be performed for the following conditions: for the growth of the stomach outside the tumor; ultrasound for more than 5cm tumors, easily misdiagnosed as liver or spleen tumors; gastroscopy showed pressure on the stomach wall, suggesting that the stomach outside the tumor