Pituitary tumors grow from the pituitary gland, the master gland of the body, located deep in the skull. These tumors can affect the whole body by interfering with normal hormone production. As the tumor grows, it can cause a variety of symptoms including compression of nearby nerves, resulting in vision problems. There are various kinds of pituitary tumors: adenomas, craniopharyngiomas, and Rathke’s cleft cysts. Most are benign (not cancerous) and are often curable. Treatment options aim to remove the tumor or control its growth and restore normal hormone function.