A solid renal mass detected during prenatal ultrasound is most likely a
Wilm's tumor
Neuroblastoma
Clear cell sarcoma
Mesoblastic nephroma
Mesoblastic nephroma is the most common solid renal tumor identified in the neonatal period and the most frequent benign renal tumor in childhood. It represents 3-10% of all pediatric renal tumors. Many cases are diagnosed with prenatal ultrasound and can manifest as polyhydramnios, hydrops, and premature delivery. Most of the patients are diagnosed before 3 mo of age, whereas WT is rarely diagnosed before 6 mo of age. Radical nephrectomy is the treatment of choice and may be sufficient by itself. Local recurrence is uncommon. Reference: Nelson; Neuroblastoma; Page no: 2467
Childhood tumors