What is a Voiding Cystourethrogram (VCUG)?

Called a VCUG or cystogram, this test shows your doctor the size of your bladder and how well it can drain. The test is also used to pinpoint anything abnormal about the urethra and the bladder. For example, it can find a problem with the narrowing of the urethra (stricture ), or VUR (vesicoureteral reflux), when urine flows back up from the bladder through the urethra to the kidney.

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