Hypovitaminosis A causes hydrocephalus by altering CSF resorption at the arachnoid granulations.

维他命A不足也会造成蜘蛛膜对脑脊吸收障碍。

Primary (congenital) hydrocephalus is apparently due to failure of arachnoid villi to resorb CSF at an adequate rate.

水脑症，原发性的水脑症是因为蜘蛛膜小梁对脑脊的再吸收异常。