[Anatomo-pathologic diagnosis of neonatal malformations of the urinary tract. 1: Malformations of the kidney parenchyma].

Congenital anomalies of the urinary tract are of great pathological importance and account for about 10,9 per cent of all fetal and neonatal autopsies. This paper reports 17 cases of such lesions compiled from 156 consecutive autopsies of newborn infants performed during 33 months at C.H.R. de Bordeaux (France). Each malformation is discussed, using embryological classification. These lesions can occur independently but usually they are associated with other organ abnormalities. Whenever, an hereditary syndrome must be seek after. In a first part, we present the anomalies of the kidney proper. In a second part, we shall present the anomalies of the excretory apparatus, bladder and urethra.