A pineal gland cyst is a cyst in the pineal gland, a small endocrine gland in the brain that produces melatonin.
They are in most cases asymptomatic, and it is rare for a pineal cyst to cause symptoms.
If they do, these would most likely be headache, visual disturbances, or hydrocephalus which can be extremely dangerous if left untreated.
Pineal cysts are not cancer and most of the time they do not enlarge over 2 centimeters.
Asymptomatic cysts require no treatment.
Some doctors choose to monitor patients with CT Scan or MRI to look for cyst growth, but most doctors do not.
Please let me know if you have further questions. I am here to help.