CP and Hydrocephalus: Congenital hydrocephalus can be caused by increased production of CSF by the CP, impaired absorption of CSF in the blood stream, or as in the majority of congenital cases, by obstruction of CSF flow (McAllister, 2012; Tully and Dobyns, 2014; Kahle et al., 2016; Kousi and Katsanis, 2016).