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 the median cavity in the brain bounded by the thalamus and the hypothalamus on either side, and anteriorly by the optic chiasm).Causes
The cause of colloid cysts is unknown.Symptoms
Symptoms usually occur in adults and may be dramatic, with episodes of headache, weakness of the limbs, and loss of consciousness. These symptoms are attributed to intermittent, acute episodes of hydrocephalus due to blockage of the foramen of Monro by the mobile cyst.TreatmentQuestions
Where is the colloid cyst located in the brain?
What does it consist of?
Is it malignant or benign?
Will the symptoms get worse?
What will happen if the cyst is left intact?
What surgical techniques can be used to excise it?
What are the risks of surgery?