室管膜瘤原发于胎儿侧脑室并引起双侧脑室积水者比较罕见,今报道1例。孕妇26岁,妊娠37周时出现胎动异常,妇科及B超检查皆无异常。第42周时,B超示胎儿双侧脑室积水。腹部检查:胎头半固定、触之有波动感。行穿颅分娩术,终止妊娠。尸检发现右颅后方穿孔5cm,前囟4cm×2cm,头径 Ependymoma primary in the fetal lateral ventricle and cause bilateral ventricular water is relatively rare, 1 case reported. Pregnant women 26 years old, 37 weeks of gestation fetal abnormalities, gynecological and B-ultrasound were normal. Week 42, B ultrasound showed fetal bilateral ventricular water. Abdominal examination: fetal head semi-fixed, touching a sense of volatility. Line transcranial labor, termination of pregnancy. Autopsy found that the right cranial perforation 5cm, anterior fontanel 4cm × 2cm, head diameter