原发性颅内淋巴瘤较少见,约占原发性脑肿瘤的1%,未被治疗者平均生存6周,治疗后50%～70%生存1年,16%～30%生存2年。作者回顾性分析了28例原发性颅内淋巴瘤的CT特征与生存时间的相关性。男17例,女11例,年龄中位数为57岁(32～72岁)。21例采用Philips Tomoscan350,7例采用EMI1010,评价肿瘤数目、部位、强化类型及水肿程度。9例肿瘤的组织病理学为高恶度、大细胞淋巴瘤;14例介于高度和中度;5例为低度,均为B细胞型。28例生存的平均和中位时 Primary intracranial lymphoma is rare, accounting for about 1% of primary brain tumors, untreated average survival of 6 weeks after treatment 50% to 70% survival for 1 year, 16% to 30% for 2 years . The authors retrospectively analyzed the correlation between CT features and survival time in 28 patients with primary intracranial lymphoma. There were 17 males and 11 females with a median age of 57 years (32-72 years). 21 cases with Philips Tomoscan350, 7 cases with EMI1010, evaluation of tumor number, location, enhancement type and degree of edema. Histopathology of the 9 tumors was high-grade, large-cell lymphoma; 14 were moderate and high; and 5 were low-grade B cells. 28 cases of survival average and median