The Detection of Vesicoureteral Reflux in a Nonfunctioning Kidney on a Tc-99m DTPA Renal Function Study

摘要

A 7-year-old child who had previously undergone a left pyeloplasty because of vesicoureteral reflux (VUR) underwent dynamic Tc-99m-DTPA imaging for an evaluation of renal function. Dynamic images showed a nonfunctioning left kidney and a normally functioning right kidney with pelvicaliceal stasis. Following furosemide injection, the right pelvicaliceal stasis disappeared in a few minutes, while the left ureteral and subsequently left pelvicaliceal system was filling with the activity that came from the right kidney that had passed through the bladder. This drainage demonstrated a high degree VUR(Grade III) on the side of the nonfunctioning kidney. Extensive parenchymal damage was thought to be due to a high degree VUR in the left kidney. A static Tc-99m DMSA study and ultrasonography revealed the presence of left VUR nephropathy.