摘要目的 探讨单发囊性脑转移瘤的临床特点. 方法 回顾性分析经手术切除,病理证实的8例单发囊性脑转移瘤的临床表现和影像学表现. 结果 8例单发囊性脑转移瘤术前误诊5例;术前发现肺癌3例,术后发现肺癌2例;影像表现:囊壁可均匀、不均匀或壁结节;增强呈环形强化6例,壁小结节强化1例,无强化1例;瘤周无水肿3例,轻度水肿2例,中度水肿2例与重度水肿1例. 结论 单发囊性脑转移瘤临床误诊率高,缺乏"小瘤体,大水肿"的脑转移瘤典型影像征象,肿瘤病史及肺部CT检查可提高诊断率.

abstractsObjective To study the clinical features of the single cystic brain metastases. Methods The datas of clinical and imaging in 8 cases of single cystic brain metastases proved by pathology were retrospective analyzed. Results 5 cases were misdi-agnosed before operation in 8 cases of single cystic brain metastases. 3 cases lung cancer were found before operation and 2 cases postoperation. Expression of imaging:the wall of cystic brain metastases were classified into three types include irregular, regular and nodular. Circular reinforcement in 6 cases, nodular enhancement in 1 case and not enhancement in 1 case. Not peritumoral e- dema in 3 cases, low grade edema in 2 cases, moderate grade edema in 2 cases and hige grade in 1 case. Conclusion Single cystic brain metastases usually are misdiagnesed in clinic. It has not "small tumor and high grade peritumoral edema" ,which is the representative manifestation in CT or MRI imaging of brain metastases. The history of tumor and CT scan on lunge are help to right diagnosis.