Two Cases of Intraventricular Arachnoid Cyst

Two cases with intraventricular arachnoid cysts are reported and a brief review of the relevant literature is presented. Arachnoid cysts are benign developmental cysts that occur in the cerebrospinal axis in relation to the arachnoid membrane. They are usually extracerbral or extraventricular. Intraventricular arachnoid cysts are rare: except the two cases reported here, only five cases have been described. The following characteristics were noted in these patients: all were young; headache was the initial symptom; the cyst was in the body of a lateral ventricle.