Neuroblastoma is a form of cancer that is made up of cells that are found in nerve tissues of the body. These cells are called neuroblasts, and they are early nerve cells found most commonly in the adrenal glands (near the kidneys), and along the tissues around the spinal cord in the neck, chest, abdomen and pelvis. Many neuroblastomas start in the adrenal glands.
Neuroblastoma occurs most commonly in infants and children under 5 years of age, and rarely in children over 10 years of age. Very rarely, neuroblastoma occurs in adults.