ICD-11 definition : Congenital hydronephrosis is a renal urinary disease characterized by distension and
dilation of the renal pelvis and calyces secondary to various congenital obstructive
malformations of the kidneys and urinary tract that can evolve to renal atrophy.;
Congenital hydronephrosis is a renal urinary disease characterized by distension and
dilation of the renal pelvis and calyces secondary to various congenital obstructive
malformations of the kidneys and urinary tract that can evolve to renal atrophy.