Korean J Nucl Med.  2003 Jun;37(3):202-203.

Tc-99m DTPA and Tc-99m DMSA Renal Scan findings in Patients with Congenital Megacalyces and Megaureter without Urinary Tract Obstruction

• Ahn BC
• Bae JH
• Jeong SY
• Lee J
• Lee KB

Abstract

A 10 days old male infant with congenital megacalyces and megaureter, diagnosed by prenatal ultrasonographic screening, underwent Tc-99m DTPA renal scan for evaluation of urinary tract patency, Tc-99m DMSA scan for evaluation of renal cortical damage. He also underwent intravenous urography (IVU) and renal ultrasonography. Tc-99m DTPA renal scan demonstrates intense tracer accumulation in enlarged both renal pelvocalyses and ureters, which rapidly washout without diuretics administration. Tc-99m DMSA renal cortical scan shows no remarkable photon defect in both renal cortices and visible tracer uptake in both megaureter areas. Ultasonographic and IVU studies show enlarged both renal calyses and bullously dilated ureters, but no dilatation in renal pelvis. Follow up Tc-99m DTPA renal scan, performed at one year later, also reveals intense tracer accumulation in enlarged both urinary tracts which rapidly washout without diuretics, and shows no significant change compare to the previous Tc-99m DTPA renal scan. Urinary tract obstruction and renal cortical damage can be easily evaluated with Tc-99m DTPA and Tc-99m DMSA scans in patiens with megacalyces and megaureter.

MeSH Terms

Dilatation
Diuretics
Follow-Up Studies
Humans
Infant
Kidney Pelvis
Male
Mass Screening
Pentetic Acid*
Succimer*
Ultrasonography
Ureter
Urinary Tract*
Urography
Diuretics
Pentetic Acid
Succimer