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本文目的是分析单发脑转移瘤的ＣＴ特点。１５６例单发脑转移瘤均经手术和病理证实，男性多见，男女发病率之比为２．８∶１，原发肿瘤诊断年龄２４～７８岁，平均５６．３岁。单发脑转移瘤ＣＴ表现可分为以下五型：（１）结节水肿型（４０．３８％）；（２）环水肿型（３９．７４％）；（３）囊伴结节型（１０．９％）；（４）结节型（６．４１％）；５．囊性低密度型（２．５６％）。ＣＴ对各种类型的单发脑转移瘤的诊断有着重要意义。
The purpose of this article is to analyze the CT features of solitary brain metastases. 156 cases of solitary brain metastases were confirmed by surgery and pathology, more common in men, the incidence of male to female ratio of 2.8: 1, the primary tumor diagnosis of 24 to 78 years of age, with an average of 56.3 years. Single brain metastases CT findings can be divided into the following five types: (1) nodular edema (40.38%); (2) ring edema (39.74%); (3) capsule with nodular 10.9%); (4) nodular (6.41%); Cystic low-density type (2.56%). CT is of great importance for the diagnosis of various types of solitary brain metastases.