Due to their characteristic location and tendency toward enlargement, associated obstructive hydrocephalus is common. 因为他们的特征性位置和增大的趋势，常见继发性阻塞性脑积水。
Resolution of infection may be followed by adhesive arachnoiditis with obliteration of subarachnoid space leading to obstructive hydrocephalus. 感染的溶解可能引起粘连性蛛网膜炎，粘连性蛛网膜炎使蛛网膜下腔变小甚至消失，最后造成梗阻性脑积水。
