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目的 通过对４ 例脑囊性转移癌病变的检查，探讨该囊肿的形成机制及ＣＴ导向立体定向穿刺的临床价值。方法 患者４ 例，男性３ 例，女性１ 例，年龄２８～４９ 岁。ＣＴ或ＭＲＩ表现为脑内多发囊性病变；１ 例手术，３ 例ＣＴ立体定向穿刺活检，光镜下观察。结果 ４ 例中３ 例诊为脑内小细胞未分化癌转移，１ 例为肺腺样囊性癌脑转移。结论 脑囊性病变可以是脑转移癌的一种表现形式；ＣＴ导向立体定向穿刺对其确诊有重要意义。
Objective To investigate the mechanism of cyst formation and the clinical value of CT-guided stereotactic puncture by examining 4 cases of lesions of brain cystic metastatic carcinoma. Methods 4 cases of patients, 3 males and 1 female, aged 28 to 49 years. CT or MRI showed intracranial multiple cystic lesions; 1 case of surgery, 3 cases of CT stereotactic biopsy, light microscopy. Results Of the 4 cases, 3 cases were diagnosed as small cell carcinoma of the brain and 1 case of lung adenoid cystic carcinoma. Conclusion Cerebral cystic lesions can be a manifestation of brain metastases; CT-guided stereotactic puncture is of great significance for its diagnosis.