CLASSIFICATION OF MULTICYSTIC RENAL DYSPLASIA

1. Multicystic renal dysplasia associated with genetic syndromes:
• Meckel's syndrome.
• Trisomy 13.
• Trisomy 18.
• Jeune's asphyxiating thoracic dystrophy.
• Zellwegers syndrome.
• Oculorenal syndrome.
• Oro-facial-digital syndrome.
• Smith-Lemli-Opits syndrome.
• Ivermark's familial dysplasia.
• Roberts syndrome.
• Short rib polydactyly syndrome.
2. Multicystic renal dysplasia secondary to obstruction:
   Unilateral:
• Ectopic ureterocele.
• Ureteropelvic junction obstruction.
• Ureterovesical junction obstruction.

Bilateral:

• Prune belly syndrome.
• Posterior urethral valves.
• Urethral atresia.
• Ureteropelvic junction obstruction.
• Ureterovesical junction obstruction.