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患儿男,2.5岁。因头颅进行性增大2年,于1984年8月20日入院。检查:发育营养一般,头颅明显增大,前额较突出,额颞部头皮静脉明显怒张,头围64cm,叩诊为破壶音。神经系统检查:除眼底视乳头边界欠清及步态不稳外,无明显其他阳性体征。X线平片,颅骨菲薄,颅缝分离,指状压迹增多。CT脑扫描,侧脑室及第三脑室明显扩大,四脑室内充满密度一致性球形阴影,其密度近于脑组织,未作增强扫描对比。于1984年9月8日在全麻下,后颅凹中线开颅探查。打开硬膜即见紫红色表面光滑之
Children male, 2.5 years old. Progressive increase of 2 years due to head, admitted on August 20, 1984. Check: general nutritional development, significantly increased skull, prominent forehead, frontotemporal scalp vein was obviously engorgement, head circumference 64cm, percussion broken pot sounds. Nervous system examination: In addition to fundus optic disc border and gait instability, no other positive signs. X-ray film, meager skull, cranial suture separation, finger pressure increase. CT brain scan, lateral ventricle and the third ventricle was significantly enlarged, four-ventricle filled with density consistent spherical shadows, the density of nearly brain tissue, no contrast enhanced scan. On September 8, 1984 under general anesthesia, posterior fossa midline craniotomy exploration. Open the dura mater to see the surface smooth purple