Neurological deterioration after head trauma in patients with colloid cysts of the 3rd ventricle: Two case histories

The authors report 2 cases of colloid cyst of the 3rd ventricle (both patients previously asymptomatic) diagnosed after head trauma. Neurological deterioration due to biventricular hydrocephalus, rendering necessary an urgent bilateral CSF shunting, was observed. The possible relationship between clinical deterioration and head injury in these cases is discussed.