How is neuroblastoma present?

Neuroblastoma is the most common extracranial solid tumor of childhood. These neoplasms occur most commonly during the first 5 years of life and may arise during infancy. Neuroblastomas may occur anywhere in the sympathetic nervous system and occasionally within the brain, but they are most common in the abdomen; a majority of these tumors arise in either the adrenal medulla or the retroperitoneal sympathetic ganglia