title: Rapidly expanding mass in a neonate.
mesh_terms: D000307:Adrenal Gland Diseases / Q000175:diagnosis; D006470:Hemorrhage / Q000175:diagnosis; D006801:Humans; D007231:Infant, Newborn; D007680:Kidney Neoplasms / Q000151:congenital / Q000175:diagnosis*; D008297:Male; D014463:Ultrasonography; D009396:Wilms Tumor / Q000151:congenital / Q000175:diagnosis*