A Colloid Cyst is a collection of gelatinous material in the brain.
Colloid cysts arise within the brain. The cysts are well-encapsulated and consist of a layer of connective tissue covered with cells. The wall encapsulates a thick, gelatinous (colloid-like) material.
Symptomatic cysts vary from 6 mm to 9 cm in diameter, but usually range from 1 to 3 cm. They usually take origin from the roof of the third ventricle just posterior to the foramen of Monro within the brain (the third ventricle is...