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液出现吸收障碍。
英语百科
Arachnoid granulation
Arachnoid granulations (or arachnoid villi) are small protrusions of the arachnoid (the thin second layer covering the brain) through the dura mater (the thick outer layer). They protrude into the venous sinuses of the brain, and allow cerebrospinal fluid (CSF) to exit the sub-arachnoid space and enter the blood stream.