Abstract
The authors report a case of an infant girl referred to our clinic because of an enlarged head and a delay in taking her first steps. Hydrocephalus was diagnosed, a ventriculo-peritoneal shunt was performed immediately, and a Metrizamide CT citernogram was run. The features of Metrizamide CT cisternogram of the arachnoid cyst situated in the tentorium at the posterior of the third ventricle are described and the mechanism of fluid accumulation in the cyst.
