Sandbox: DDx Kidney mass
- Detected prenatally
- Bilateral kidney involvement results in stillbirth
- Irregular, mobile, nontender, flank abdominal mass in infants
- Lobulated renal contour
- Multiple, noncommunicating cysts
- Cluster of cysts with variable sizes (1mm-2cm) and shapes
- Dysplastic parenchyma
- Absence of a normal pelvocaliceal system
- Nests of metaplastic cartilage and undifferentiated epithelial ducts
- Extensive fibrous tissue stroma
- Thin-walled cysts cysts filled with yellow/clear fluid
Nonmalignant causes
cystic renal dysplasia glomerulocystic kidney mesothelial cysts nephronophthisis