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Sacramento, CA
A 53-year-old female asked:

I was recently diagnosed with mild hydronephrosis by an ultra sound. scheduled to have avct urogram. how accurate was the ultra sound? i tested posit

2 doctor answers2 doctors weighed in
Dr. Pouneh Nouri
Specializes in Nephrology and Dialysis
Hydronephrosis: Ultrasound has a good and high sensitivity in picking up hydronephrosis (obstruction of the urinary tract), CT urogram is used to locate the exact site and nature of the obstruction and definitely has higher sensitivity and specificity than ultrasound. The reason CT urogram or pyelogram is not used as the first diagnostic/screening test (and Ultrasound is) is because it is almost 8 times pricier!
Dr. George Klauber
Specializes in Pediatric Urology
Mild hydronephrosis: Usually requires no further investigation that follow-up US in 3 - 6 months, unless you have symptoms such as pain or suspected mass. Mild hydronephrosis, if found incidentally, has likely been there all your life & requires no treatment. CT urogram is very expensive & likely unnecessary unless a reputable specialist explains why it is. Many PCPs do not understand grades of hydronephrosis!

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Last updated Jan 16, 2016

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