后颅窝肿瘤眼震电图分析  

Electronystagmographic Changes in Patients with Posterior Cranial Fossa Tumors

作　　者：赵沛英[1] 李志光[1] 曹武臣 

机构地区：[1]北京医科大学第一临床医院耳鼻咽喉科

出　　处：《中华耳鼻咽喉科杂志》1994年第1期3-5,共3页Chinese Journal of Otorhinolaryngology

摘　　要：报道３０例后颅窝肿瘤的眼震电图（ＥＮＧ）检查所见，其中桥小脑角肿瘤２３例，小脑半球肿瘤３例，脑于肿瘤４例。２３例桥小脑角肿瘤直径０．７～５．０ｃｍ不等，１９例有眼震，眼辨距障碍试验过冲者占２２％，眼跟踪试验为Ⅲ型或Ⅳ型曲线者占５５．６％，视动图型５９％减弱，冷水试验一侧前庭功能低下者占８５％，６０％例视抑制试验异常，２０例听性脑干反应异常。讨论了小脑半球肿瘤和脑干肿瘤的ＥＮＧ特点。Findings of electronystagmography in 30 patients with posterior cranial fossa tumor were analysed.Of the 23 cases of CPA tumor,size varied between 0.7～5.0cm,the ENG showed:(1)The nystagmus occurred in 83% of patients.(2)In ODT,overshoots was showed in 22% of patients.(3)ETT showed type Ⅲ or Ⅳ curves in 55.6% of patients.(4)OKP test decreased in 59% of patients.(5)Caloric test showed canal paresis in 85% of the patients.(6)Abnormal visual suppression test occurred in 60% of patients.(7)Abnormal ABR was found in 89% of patients.We also found that tumor larger than 2.5cm presented a central type nystaginus(Bruns nystagmus)and involvement of the eve movement system.The electronystagmographic changes of the tumors of cerebellum(3 cases) and brain stem(4 cases)was discussed.

关 键 词：脑肿瘤 颅窝 眼震电图 

分 类 号：R739.410.4[医药卫生—肿瘤]