Question

Which of the following will have unilateral hydroureter?

• A. Phimosis
• B. Posterior urethral valves
• C. Urethral strictures
• D. Retrocaudal ureter

Hint:

In cases of unilateral hydroureter, consider anatomical variations such as retrocaudal ureter as a potential cause, as it can lead to localized obstruction and dilation.

Answer 1

The Correct Option is D

Unilateral hydroureter refers to the dilation of the ureter on one side, often due to an obstruction preventing the normal flow of urine. The common causes of unilateral hydroureter include:
Phimosis: This condition involves a tight foreskin in males and is not typically associated with hydroureter, which is related to urinary tract obstruction.
Posterior urethral valves: While this condition leads to obstructive uropathy, it typically causes bilateral hydroureter due to the obstruction in the posterior urethra, affecting both ureters.
Urethral strictures: These can cause obstruction, but they typically affect the flow of urine in both ureters or the bladder. It is not usually limited to one side.
Retrocaudal ureter: This condition occurs when the ureter is located behind the inferior vena cava (retrocaudal), causing obstruction of the urinary flow in one of the ureters. This is the most likely cause of unilateral hydroureter. Thus, the correct answer is Retrocaudal ureter.