Fetal and neonatal neuroblastoma: retrospective review of 271 cases.

Neuroblastoma is the foremost malignant neoplasm of the fetus and neonate. The tumor is unique because of its distinctive biologic behavior and many different clinical manifestations. The purpose of this review is to focus on the fetus and neonate to determine the various ways perinatal neuroblastomas differ clinically and morphologically and in their treatment from those found in the older child to show that some forms of the tumor have a better outcome than others. The report attempts to evaluate the influence of site, histology, stage, biologic markers, and treatment on survival.