Overview

Craniopharyngioma is a type of central nervous system (CNS) tumor. A tumor begins when normal cells change and grow uncontrollably, forming a mass. A tumor can be benign (noncancerous, slow-growing) or malignant (cancerous, usually fast-growing). Craniopharyngioma is a benign tumor that is usually slow-growing and unlikely to spread.

About the central nervous system

The brain and spinal column make up the CNS, where all vital functions of the body are controlled. The brain is the center of thought, memory, and emotion. It controls the five senses (smell, touch, taste, hearing, and sight), movement, and other basic body functions, including heartbeat, circulation, and breathing. The spinal cord consists of nerves that carry information from the body to the brain and from the brain to the body. When a tumor begins in the CNS, it can affect a person’s thought processes and movements. A tumor in the CNS can also be challenging to treat because the tissue surrounding the tumor may be vital to the body’s functioning.

Craniopharyngioma starts near the pituitary gland in a part of the brain called the suprasellar region. This region is the area of the brain above the part of the skull where the pituitary gland is located. The pituitary gland is an important gland in the brain and is often called the “master endocrine gland” because it produces several different hormones that affect many bodily functions.

About craniopharyngioma

Craniopharyngioma is a slow-growing tumor that can grow for many years before being found. It can be solid and/or cystic (a closed pouch or sac that contains fluid), and it may contain calcified nodules (a growth or lump that has hardened due to deposits of calcium).  A cystic tumor may also contain some solid material or debris and often contains very high amounts of protein.

This section covers craniopharyngioma that occurs in children. For information about craniopharyngioma in adults, read the Guide to Brain Tumors.

Find out more about basic terms used in this section.

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