Describe how a neuroblastoma would be differentiated from an adrenal hemorrhage sonographically. A 2-day-old premature newborn has clinical symptoms of anemia and jaundice. An abdominal sonogram is...

Describe how a neuroblastoma would be differentiated from an adrenal hemorrhage sonographically.

A 2-day-old premature newborn has clinical symptoms of anemia and jaundice. An abdominal sonogram is ordered. The only abnormal finding is a complex mass superior to the right kidney. What is the most likely diagnosis, given the patient’s age and symptoms? How would you expect this mass to change if a follow-up sonogram is performed in a few weeks?