Clinical Presentation

A neonate presents with a history of abnormal antenatal ultrasound.

Figure 79A

Figure 79B

Radiologic Findings

Multicystic dysplastic kidney (MCDK)

Differential Diagnosis

• Cystic renal tumors, including mesoblastic nephroma or cystic Wilms’ (typically, solid components are also present in these lesions)
  
• Autosomal dominant polycystic kidney disease (a bilateral disorder, only rarely manifests with identifiable cysts in infancy)
  
• Autosomal recessive polycystic kidney disease (large echogenic kidneys are seen, generally without resolvable cysts)

Discussion

Background