NCIt definition : A finding of congenital malformations in both kidneys characterized by the presence
of cysts of various sizes, primitive ducts, islands of metaplastic cartilage and undifferentiated
mesenchyme, and the absence of cortico-medullary demarcation.;
Alternative definition : NICHD: Bilateral renal dysplasia is a congenital malformation in both kidneys characterized
by the presence of cysts of various sizes, primitive ducts, islands of metaplastic
cartilage and undifferentiated mesenchyme, and the absence of cortico-medullary demarcation.;