Congenital Mesoblastic Nephroma: A Case Report

Area of Science:

• Pediatric Oncology
• Nephrology
• Pathology

Background:

• Congenital mesoblastic nephroma (CMN) is the most common congenital renal tumor, typically presenting in infancy.
• These rare renal tumors require accurate diagnosis and timely management.

Observation:

• A term female neonate presented with bilateral lower limb swelling within the first week of life.
• Radiological evaluation, including ultrasonography, identified an intra-abdominal mass.

Findings:

• The neonate underwent radical nephroureterectomy for the abdominal mass.
• Histopathological examination confirmed the diagnosis of congenital mesoblastic nephroma, specifically of the mixed subtype.

Implications:

• This case highlights the importance of considering CMN in neonates with abdominal masses and leg swelling.
• Early diagnosis and surgical intervention are crucial for managing congenital mesoblastic nephroma.
• Understanding the mixed subtype is important for prognosis and treatment planning in pediatric kidney neoplasms.