ICD-11 definition : Congenital primary megaureter is an idiopathic condition in which the bladder and
bladder outlet are normal but the ureter is dilated to some extent. It may be obstructed,
refluxing or unobstructed and not refluxing.;
Congenital primary megaureter is an idiopathic condition in which the bladder and
bladder outlet are normal but the ureter is dilated to some extent. It may be obstructed,
refluxing or unobstructed and not refluxing.