The most common malignant neoplasm of infancy is –

Neuroblastoma is the most frequently diagnosed neoplasm in infants accounting for 28-39% of neonatal malignancies' - Nelson. Neuroblastoma Neuroblastoma is a malignant tumor of the autonomic nervous system. It has following peculiarities : - Most common abdominal cancer of childhood. Most common cancer of infancy Most common extra cranial solid tumor of childhood (most common solid tumor of childhood is brain tumor). It is a neuroendocrine tumor, arising from any neural crest element of the sympathetic nervous system. Primary tumor is localized in the localization of sympathetic nervous system.