英语语法分析

Discussion of Disease: Cystic infratentorial mass.

讨论：囊性幕下占位病变。

Combined supra-infratentorial approach was considered to be the main approach for large tumors.

联合入路在巨大肿瘤的切除中最为常用。

WMC was most common in frontal region, followed by parietooccipital region, temporal region, basal ganglia, and infratentorial area.

额区是WMC的好发部位，依次为顶枕区、颞区、基底节和幕下。