Neuroblastoma is a cancerous tumor that develops in the nervous system of babies and young children. It can also occur, rarely, in adolescents. A neuroblastoma tumor often affects immature nerve tissue called neuroblasts. The most common area for neuroblastoma to appear is in the adrenal glands, which sit above the kidneys. Adrenal glands produce hormones that control body functions such as digestion, blood pressure, breathing and heart rate. Neuroblastoma can also begin in other areas of the...