How should an abdominal mass in a neonate be evaluated? Hydronephrosis Name 10 causes of abdominal mass in older infants and children. Prethral obstruction Reflux UPJ Ureteral duplication What are 16 entities in the differential diagnosis of an abdominal mass in a neonate? What is the initial diagnostic test in the evaluation of an abdominal mass in an older infant or child? What is the most frequently occurring primary neoplasm of the kidney in young infants? Book traversal links for GU disorders ‹ Who tends to be affected by hypertrophic pyloric stenosis? Up How should an abdominal mass in a neonate be evaluated? ›