Hydrocephalus is defined as an accumulation of cerebrospinal fluid with consequent enlargement of the ventricular system. This can be caused by various factors. Fundamentally, a distinction is made between obstructive hydrocephalus and malresorptive hydrocephalus.
Imaging
Hydrocephalus can be visualized on CT or MRI. Depending on the etiology, the site of obstruction in obstructive hydrocephalus may only be visualized on MRI.