Multicystic dysplastic kidney (MCDK) Renal cortex is replaced by numerous cysts of multiple sizes.
Dysplastic parenchyma anchors the cysts( bunch of grapes).
The calyceal drainage system is absent.
80-90% unilateral disorde.
Bilateral incompatible with life.
MCDK with contralateral renal agenesis does not support life.
classic type has a random configuration of cysts,
hydronephrotic type presents with a discernible, dilated renal pelvis surrounded by cysts.
? third type ... solid cystic dysplasia- composed of smaller cysts with a greater amount of nonfunctional parenchyma.
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