Table 1.

Etiology of Hydrocephalus

Causative factor	Number of Patients
Aqueductal stenosis	17
Spinal dysraphism:
Meningomyelocele	15
Occipital encephalocoele	1
Dandy Walker syndrome	3
Noonan Syndrome	1
Post tubercular meningitis	6
Post pyogenic meningitis	5
Intraventricular Hemorrhage	1
Post traumatic	1
Total	50