You used the transcallosal-interseptal-interforniceal approach to remove the third ventricle tumor. If the tumor extended into the lateral ventricle, what did you do?

• 你做经胼胝体-透明隔间隙-穹隆间入路切除第三脑室内的肿瘤,如肿瘤长入侧脑室,你如何处理?