HUGE COLLOID CYST OF THE 3RD VENTRICLE ASSOCIATED WITH CALCIFICATION IN THE CYST WALL

Giant or huge colloid cysts of the third ventricle up to of more than 3 cm in diameter are extremely rare. The patient presented with sympto ms of increased intracranial pressure, including headache, vomiting, a nd papilledema. Computerized tomographic (CT) scan revealed a hypodens e, huge colloid cyst of the third ventricle associated with calcificat ion in the cyst wall. Both hypodensity and calcification are uncommon roentgenological findings for colloid cysts of the third ventricle. Th e patient was operated on by the transcortical/transventricular approa ch and the colloid cyst was completely excised.