Colloid Cyst

Colloid Cyst •Part of a coronal section through the foramina of Monro showing a colloid cyst of the third ventricle. •Colloid cysts can intermittently obstruct the foramina causing severe headaches or can become impacted in the third ventricle causing acute hydrocephalus and herniation. •Colloid cysts are said to arise from Rathke's pouch. (Description By:Margaret Grunnet,M.D. ) (Image Contrib. by: UCHC )