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目的: 探讨胃平滑肌肿瘤的螺旋CT 表现、鉴别诊断及检查技术。材料与方法: 采用充分口服温开水( 或0 .5 % ～1 .0 % 的泛影葡胺) 、低张和及时扫描的CT 检查方法,分析21 例经手术病理证实胃平滑肌肿瘤的螺旋CT 表现。结果: 12 例平滑肌瘤CT 表现多为圆形或椭圆形软组织肿块,与胃壁广基底或带蒂相连,直径多在5cm 以内。除瘤灶内有散在钙化或中央呈低密度各1 例外,其余肿块密度均匀,强化均一。9 例平滑肌肉瘤CT 表现为椭圆形或不规则肿块,宽基底与胃壁相连,内见不规则低密度坏死区,实质部分不均匀强化,胃粘膜面多有大小不等的溃疡,肿块直径多大于5cm 。有1 例广泛侵及大、小网膜、脾曲结肠及肝门区。结论: 螺旋CT 扫描对胃平滑肌肿瘤诊断及鉴别诊断颇有价值,对于外生性平滑肌肿瘤的诊断明显优于胃镜和钡餐检查
Objective: To investigate the spiral CT findings, differential diagnosis and examination techniques of gastric smooth muscle tumors. MATERIALS AND METHODS: Spiral CT images of 21 cases of gastric smooth muscle tumors confirmed by pathology were analyzed by CT scanning with adequate oral warm water (or 0.5% to 1.0 % of diatrizoate), low tension, and timely scanning. which performed. RESULTS: The CT appearances of 12 cases of leiomyoma were mostly round or oval soft tissue masses, which were connected to the basal or pedicle of the gastric wall. The diameter was more than 5 cm. In addition to scattered calcification in the tumor or a low density in the center, except for the other lesions, the density of the remaining tumors was uniform and the enhancement was uniform. 9 cases of leiomyosarcoma CT showed oval or irregular masses, wide base and stomach wall connected, see irregular low-density necrosis area, the substantial part of the non-uniform enhancement, stomach mucosa surface ulcers of different sizes, the diameter of the tumor is more than 5cm. There were 1 cases of extensive invasion of the large and small omentum, splenic flexure and hepatic portal area. Conclusion: Spiral CT scan is valuable for the diagnosis and differential diagnosis of gastric smooth muscle tumors. It is better for the diagnosis of exogenous smooth muscle tumors than gastroscopy and barium meal examination.