Harrison H R, Reynolds A F
Surg Neurol. 1982 Mar;17(3):197-9. doi: 10.1016/0090-3019(82)90277-4.
A 4-year-old girl with known coccidioidal meningitis developed posterior fossa signs. CT scanning revealed a large fourth ventricle. Injection of contrast medium into the lateral ventricles revealed free flow into the fourth ventricle, and injection into the fourth ventricle revealed no flow into the aqueduct or third ventricle. The posterior fossa signs cleared after shunting of the fourth ventricle. A one-way aqueductal valve resulting from the ventricular inflammation is hypothesized.
一名患有已知球孢子菌性脑膜炎的4岁女孩出现后颅窝体征。CT扫描显示第四脑室巨大。向侧脑室注射造影剂显示造影剂可自由流入第四脑室，而向第四脑室注射造影剂则显示无造影剂流入导水管或第三脑室。第四脑室分流术后后颅窝体征消失。推测是由脑室炎症导致单向导水管瓣膜形成。
