WHAT IS RETROGRADE PYELOGRAPHY TEST?
Retrograde pyelography is an invasive radiographic (fluoroscopic) examination of the kidneys from a distal direction via the ureters. During a cystoscopy, catheters are passed into the ureters, and radiopaque contrast material is injected. The mucous membrane absorbs minimal amounts of the iodine radiopaque contrast material. Thus the complications of hypersensitivity reactions or delayed excretion of the dye in renal impairment that is associated with intravenous dye injections are avoided.