The most common malignant neoplasm of infancy is -
Robbins basic pathology. 7th edition. page no. 500. Chapter diseases of infancy and childhood. Neuroblastoma is the second most common solid malignancy after brain tumours. It accounted as much as 50% of neonatal malignancies.
Malignant teratoma
Neuroblastoma
Wilms' tumor
Hepatoblastoma
Pediatrics, environment and nutrition