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目的:探讨胃部胃肠间质瘤(GIST)的相关CT征象与肿瘤恶性程度间的关系。方法:选择经手术及病理证实并有详细恶性程度分级的胃部胃肠间质瘤病理21例进行回顾性分析。观察病灶的大小及坏死灶与肿瘤恶性程度分级间的关系。结果:本组病例40岁以下高度恶性就有3例,占总比例的14%,占40岁以下病例组的60%。肿瘤的最大径<30 mm时恶性程度较低,最大径>50 mm时恶性程度较高。无坏死的病灶恶性程度较低,有坏死的病灶恶性程度较高。可确定为低度恶性的征象有肿瘤最大径<30 mm,无坏死。结论:肿瘤恶性程度的鉴别与“年龄”及“性别”关系不大。肿瘤的恶性程度与“大小”及“坏死程度”关系密切。
Objective: To investigate the relationship between CT findings of gastric gastrointestinal stromal tumors (GIST) and the degree of tumor malignancy. Methods: Twenty-one cases of gastric gastrointestinal stromal tumors, which were confirmed by operation and histopathology, and had a detailed grade of malignancy, were retrospectively analyzed. Observed the size of the lesion and the relationship between the necrotic lesion and the malignant grade of the tumor. Results: Three cases were highly malignant under the age of 40 in this group, accounting for 14% of the total and 60% of the cases under the age of 40. The maximum malignant tumor diameter less than 30 mm less malignant, maximum diameter> 50 mm higher degree of malignancy. No necrosis of the lesion is less malignant, with a higher degree of necrosis of the lesion. Can be identified as low-grade signs of malignancy tumor maximum diameter <30 mm, no necrosis. Conclusion: The identification of malignant degree of tumor has little to do with age and gender. The degree of malignancy of the tumor is closely related to the “size” and the “degree of necrosis”.