A craniopharyngioma is a benign tumor that is found near the pituitary gland. The pituitary gland is under the brain but directly connected to it. It controls the production of many hormones in the body.
A craniopharyngioma is usually a mixture of both solid tissue and fluid-filled cysts. The tumor is not cancer. It does not spread to other parts of the body. But as it grows, it may press on parts of the brain and nearby tissue. This affects hormones, vision, and other normal functions. For this reason, it needs to be treated. This kind of tumor is most often found in boys and girls 5 to 14 years old.