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Hereditary renal adysplasia: new observations and hypotheses
P Moerman1, J P Fryns, S H Sastrowijoto
1Department of Pathology I, Catholic University of Leuven, Belgium.
Abstract:
Renal agenesis and dysplasia are frequently regarded by pathologists, even pediatric pathologists, as sporadic malformations. We report six fetal autopsy cases of hereditary renal adysplasia (HRA): two pairs of siblings, one case with paternal unilateral renal agenesis, and one case with an autosomal balanced 6p/19q translocation. The main purpose of this paper is to emphasize that nonsyndromal renal agenesis and dysplasia are pathogenetically related and often inherited as an autosomal dominant trait with incomplete penetrance and variable expression. A subsidiary purpose is to present a case of bilateral multicystic dysplasia with a balanced 6p/19q translocation. This observation further supports the assignment of one of the loci for HRA to chromosome 6p.