<prompt> First sign of hydrocephalus in children is:Post clinoid erosionLarge headSutural diastasisThinned out vault  <response>: In infants the diagnosis of hydrocephalus is confirmed by USG as the fontanel are open and in most cases it tells about the level of obstruction cause like dandy walker arachnoid cyst. Investigation of Choice for Hydrocephalus Infants older patients low pressureHydrocephalus Elderly Ultrasonography CT MRI MRI 