Multicystic dysplastic kidney

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[edit] Discussion of Multicystic dysplastic kidney

  • Multicystic dysplastic kidney is the second most common cause of an abdominal mass in the neonate, after hydronephrosis.
  • Thought to be caused by severe ureteral obstruction early during gestation.
  • Multicystic dysplastic kidney most often occurs unilaterally (bilateral is incompatible with life) and does not affect renal function unless the contralateral kidney has other associated anomalies.
  • Common associated abnormalities include ureteropelvic junction obstruction (10%–20% of cases) or reflux nephropathy (30%–40%).

[edit] Imaging Findings for Multicystic dysplastic kidney

[edit] US

  • Mass of noncommunicating cysts of variable size.
  • Unlike severe hydronephrosis, in which the largest cystic structure (the renal pelvis) lies in a central location and is surrounded by dilated calices, in multicystic dysplastic kidney the cyst distribution shows no recognizable pattern.
  • Scant dysplastic, echogenic parenchyma may be visible between the cysts, but no normal renal parenchyma is seen.

[edit] Images

Patient #1

[edit] External Links

[edit] References for Multicystic dysplastic kidney