小儿髓母细胞瘤与室管膜瘤的术前误诊分析

儿童颅内肿瘤好发于中线部位和后颅凹,早期即可压迫脑室系统,影响脑脊液循环而致颅内压增高,压迫脑干等主要结构,故病情重,病程短。后颅窝肿瘤由于有颅底颅骨伪影干扰,CT影像又仅限于横轴位扫描,往往造成后颅窝肿瘤的鉴别诊断困难,而造成术前误诊1]。本文回顾分析一组儿童后颅

Analysis of the easily mistaken causes of CT on medulloblastoma and ependymoma in children

Objective To study the Easily Mistaken Causes of CT on medulloblastoma and ependymoma in children and improve the accuracy of the diagnosis. Methods and Methods 34 intracranial atypical primary tumors were collected and contrasted with clinical, CT, operation and pathological findings. Results In 34 cases, 25 case of medulloblastoma , 9 case of ependymoma. 6 case of medulloblastoma coincident with epidermoid tumor was mistaken for ependymoma, 3 case of ependymoma in IV ventricle was mistaken for cerebral cysticerosis and medulloblastoma. Conclusion It may be very important for increasing CT and MR diagnostic level of intracranial tumors to master the clinical materials and pathology knowledge correctly. Especially to the small cystic and atypical primary tumors in children.