see Pituitary tumor
Intrasellar tumors are confined to the sella turcica, where the pituitary gland is located.
Suprasellar tumors: These tumors extend above the sella turcica and may involve structures like the optic chiasm, hypothalamus, or third ventricle.
Infrasellar tumors: These tumors extend downward from the sella turcica into the sphenoid sinus.
Parasellar tumors: These tumors extend sideways from the pituitary gland, potentially affecting the cavernous sinus or other nearby structures.