Surgery Kidney and ureter 2d6be52a Most common renal tumor in neonatal period: A Renal cyst B Congenital mesoblastic nephroma C Neuroblastoma D Nephroblastoma High-Yield Explanation "Although congenital mesoblastic nephroma (CMN) is a rare benign congenital renal tumor it is the most common solid renal tumor in the neonatal period."