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目的：研究单发星形细胞病与单发脑转移病的CT诊断及鉴别诊断。方法：观察两种肿瘤的CT平扫片与对比增强片。结果：两种肿瘤在好发部位，临床在现及是环形强化时具有一定特征。结论：为对于幕上皮层或皮层下肿瘤在诊断为单发星形细胞瘤时．要考虑到单发脑转移瘤的可能性。
Objective: To study the CT diagnosis and differential diagnosis of single astrocytosis and solitary brain metastasis. Methods: The CT scan and contrast enhancement films of two kinds of tumors were observed. Results: The two tumors in the site of good hair, the clinic is now and is ring-shaped enhancement has certain characteristics. Conclusions: For supratentorial or subcortical tumors when diagnosed as solitary astrocytoma. To consider the possibility of single brain metastases.