超声诊断胎儿颅内动脉瘤合并Galen静脉瘤1例

Fetal intracranial aneurysm with Galen vein tumor diagnosed by ultrasound:a case report

孕妇,23岁,孕38周,既往无畸形胎儿分娩史。超声检查：宫内单活胎,右上腹见胎头光环,双顶径9.4 cm,头围34.5 cm,腹围34.0 cm,股骨径7.0 cm;脊柱、双肾、膀胱及心脏均未见明显异常。胎盘位于宫底,厚3.3 cm;羊水指数20.6 cm;胎心141次/min;脐动脉收缩压与舒张压比值2.32,阻力指数0.57。胎儿颅内丘脑下方见一2.5 cm×1.6 cm椭圆形囊性结构,