<unk>  is a rare, benign tumor of the central nervous system. It is a partly cystic embryonic malformation that can occur in the sellar/parasellar region and can result in a wide array of symptoms such as headaches, nausea and vomiting, visual disturbances, and endocrine disturbances.It has an incidence of 0.5 to 2 cases per million persons per year. Half of these cases occur during the first two decades of life. It represents 1.2% to 4% of all childhood intracranial tumors. It has a classical bimodal distribution of incidence with increased incidence rates in patients aged five to 14 years and 50 to 74 years.<unk>  has a very high recurrence rate, with reported rates as high as 50%. There are two subtypes of<unk> : adamantinomatous and papillary. It most commonly presents with signs of increased intracranial pressure (ICP) including headache and nausea and vomiting along with visual and endocrine disturbances. In children, failure to thrive and decreased growth rate may be the initial presentation. Multiple modalities can be implemented in the management of<unk> , including neurological surgery, radiotherapy, and instillation of sclerosing substances.
Craniopharyngioma
Choroid plexus papilloma
Germinoma
Pineal germinoma
Ganglioglioma
Subdural hygroma
Medulloblastoma
Acoustic neuroma