论文部分内容阅读
目的：研究小脑桥脑角（CPA）肿瘤脑电图（EEG）特征及其发生机理。方法：106例CPA肿瘤患者（男45例，女61例，15～64岁，平均42．9岁），以8或13导脑电图仪，按国际10／20系统安放电极，进行术前EEG描记，再分析其结果。结果：EEG未见异常47例（44．3％）；弥漫性异常17例（16．1％），其中轻度10例，中度3例，重度4例；局灶性异常42例（39．6％）。结论：CPA肿瘤属良性肿瘤，病程早、中期，EEG多属正常；病程晚期，或累及脑干网状结构上行激活系统，则符合大脑中线深部肿瘤的EEG特征，呈弥漫性异常；EEG局灶性异常与瘤体直径无显著相关，与囊变显著相关，实质性肿瘤导致脑干移位，易引起局灶性异常；CPA肿瘤局灶性异常多反映在颞、顶、枕部，与皮质桥脑束的解剖走行有关。
Objective: To study the characteristics and mechanism of electroencephalogram (EEG) in cerebellopontine angle (CPA) tumors. Methods: 106 patients with CPA tumors (45 males and 61 females, aged 15-64 years, average 42.9 years old) were enrolled in the study. EEG trace, and then analyze the results. Results: EEG showed no abnormalities in 47 cases (44.3%), diffuse abnormalities in 17 cases (16.1%), mild in 10 cases, moderate in 3 cases, severe in 4 cases, focal abnormalities in 42 cases .6%). Conclusion: The tumor of the CPA is a benign tumor. Early and mid-term, most of the EEG is normal. In the later course of the disease, or involving the activation system of the brainstem reticular network, the EEG features of deep neoplasm in the midline of the brain are diffuse and abnormal. There was no significant correlation between abnormality and tumor diameter, significant correlation with cystic change, substantial tumor leading to brain stem shift, and easily lead to focal abnormalities. Focal anomalies of CPA were mostly found in temporal, apex, occipital and cortical Anatomy of pons and goats related to walking.