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What is Antegrade Pyelography?

Male Urinary Tract
Male Urinary Tract
Medical Illustration Copyright © 2015 Nucleus Medical Media, All rights reserved

Female Urinary Tract
Female Urinary Tract
Medical Illustration Copyright © 2015 Nucleus Medical Media, All rights reserved

Antegrade pyelography uses a special dye to see detailed x-ray images of the upper urinary tract (kidney and ureter).

It is used to diagnose hydronephrosis, ureteropelvic junction (UPJ) obstruction and obstruction of the ureters, for example.