作者报告12例颅内三叉神经瘤的CT诊断。其中,岩尖-中颅窝型3例,后颅窝型2例,双颅窝型7例。平扫肿瘤呈低或等密度,增强扫描为均匀、不均匀及环状强化,肿瘤边界清楚。10例伴有岩尖、斜坡及中颅窝底骨质破坏,1例有鼻咽旁侵犯。结合文献,作者讨论了三叉神经瘤与相同部位其他肿瘤的CT鉴别诊断。 The authors report 12 cases of CT diagnosis of intracranial trigeminal neuroma. Among them, the rock tip - in the cranial fossa in 3 cases, 2 cases of posterior fossa, double skull fossa in 7 cases. Tumor was low or equal density, enhanced scanning for uniform, uneven and annular enhancement, clear tumor boundaries. Ten cases were accompanied by petrous apex, slope and the destruction of mid-floor bone mass, one case had nasal parapharyngeal invasion. In combination with the literature, the authors discussed the differential diagnosis of CT in trigeminal neurinomas with other tumors of the same location.