Obstructive cystic renal dysplasia

Obstructive cystic renal dysplasia, or Potter type IV cystic renal disease, is a potential complication that can occur from prolonged obstruction of the bladder outlet or urethra during gestation. 

Ureteric obstruction during active nephrogenesis results in cystic renal dysplasia; the earlier and longer the obstruction the more severe the histopathological changes of dysplasia 2.

Causes 

Any obstructive renal tract pathology distally involving the renal tract can be a potential cause which include:

Associations

Associated anomalies may be present in up to 50% of cases can include:

Ultrasound

The kidneys are usually normal to small 1,3 in size with highly echogenic cortices, loss of cortico-medullary differentiation, and scattered cysts (usually smaller than those seen with multicystic dysplastic kidneys) 1. The reniform shape is often preserved until late in the disease.

General differential considerations include:

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Article Information

rID: 13971
Tag: cases
Synonyms or Alternate Spellings:
  • Obstructive cystic renal dysplasia (OCD)
  • Obstructive cystic dysplasia of the kidneys
  • Renal obstructive dysplasia
  • Potter type IV cystic renal disease

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