Linked from
The 15 pages that link to Hydrocephalus, each with the reason it gives.
Brain tumorRelated: A tumor can obstruct cerebrospinal-fluid pathways and produce hydrocephalus.
CysticercosisRelated: Cysts or inflammation can obstruct cerebrospinal-fluid flow and cause it.
SyringomyeliaRelated: It can alter fluid dynamics associated with syrinx development.
Brain (anatomy)Broader topic: Enlarged ventricles can distort or compress surrounding brain tissue.