Congenital Megaureter

What is Congenital Megaureter?

Congenital megaureter is a less common form of prenatal hydronephrosis, though is diagnosed when both the kidney and ureter, to the level of the bladder, are seen to be dilated. It is likely a developmental abnormality of the vesicoureteric junction.

Like other forms of antenatally detected hydronephrosis, this condition may not require any treatment, and once investigation has been performed, good functioning kidneys with dilated ureters are observed and patients are given prophylactic antibiotics to prevent infection.

Persistent infection may require antibiotic treatment, and patients who become infected due to megaureters are more likely to require an operation. This may either take the form of an initial draining procedure; such as bring the ureter to the surface of the skin into the nappy to drain freely, or the placement of a tube in the kidney to drain the infected urine. The definitive procedure is to rejoin the ureter into the bladder in a way which is not blocked.