迟发放射性脑坏死常被误认为肿瘤复发,因而经常需要开颅探查和活检以进行鉴别。为了说明这种情况,本文报告6例:颈静脉球瘤1例,不嗜色细胞腺瘤2例,颅咽管瘤2例,筛窦和鼻腔部恶性黑色素瘤1例。临床资料:(1)放射性坏死部位。左颞叶1例,右颞叶1例,两侧额叶,视神经和视交叉4例。(2) Delayed radiation brain necrosis is often mistaken for tumor recurrence, so craniotomy and biopsy are often needed for identification. In order to illustrate this situation, this article reports 6 cases: 1 case of jugular bulboma, 2 cases of non-chromophoric adenomas, 2 cases of craniopharyngiomas, 1 case of ethmoid sinus and malignant nasal melanoma. Clinical data: (1) radioactive necrosis site. Left temporal lobe in 1 case, right temporal lobe in 1 case, bilateral frontal lobes, optic nerve and chiasm in 4 cases. (2)