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本文报告２例脑原发性淋巴瘤的ＣＴ扫描，并结合文献讨论了脑原发性淋巴瘤的ＣＴ表现。平扫肿瘤常呈等密度或稍高密度，边界清楚，瘤周有不同程度水肿，常累及脑的深部结构：基底神经节、丘脑、胼胝体，脑室周围白质及小脑蚓部。增强扫描肿瘤多为均匀强化，亦可为环状强化，偶尔可为脑回状强化。ＣＴ扫描上，脑原发性淋巴瘤易误诊为胶质瘤，脑膜瘤，转移瘤及脑脓肿。本文讨论了脑原发性淋巴瘤与它们之间的鉴别。
This article reports 2 cases of brain lymphoma CT scan, and combined with the literature discussed the CT manifestations of primary brain lymphoma. Swelling tumors often showed equal density or slightly higher density, clear boundary, there are varying degrees of tumor around the edema, often involving the deep brain structures: basal ganglia, thalamus, corpus callosum, periventricular white matter and cerebellar vermis. Enhanced scanning of tumors are mostly uniform enhancement, but also for ring-shaped enhancement, and occasionally can be enhanced back to the brain. CT scan, primary brain lymphoma misdiagnosed as glioma, meningioma, metastases and brain abscess. This article discusses the identification of brain primary lymphoma with them.