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Related Experiment Videos

Vesicoureteral reflux simulating renal function: CT appearance.

M Hertz1, Z J Rubinstein, S Apter

  • 1Department of Diagnostic Imaging, Chaim Sheba Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Israel.

Pediatric Radiology
|January 1, 1991
PubMed
Summary
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Opacified kidneys on CT scans may not indicate function due to urine reflux. Contrast in the collecting system with a non-enhancing kidney suggests vesicoureteral reflux.

Area of Science:

  • Nephrology
  • Radiology
  • Urology

Background:

  • Urine enters the kidney's pelvicalyceal system via excretion or vesicoureteral reflux.
  • Opacification of the renal pelvis and calyces after contrast administration does not always confirm kidney function.

Observation:

  • A computed tomography (CT) scan revealed a normal left kidney and a contracted, pyelonephritic right kidney.
  • Both kidneys showed contrast material in the pelvis and calyces, but the right kidney lacked parenchymal enhancement.

Findings:

  • Subsequent cystourethrography confirmed significant vesicoureteral reflux into the right kidney.
  • A nuclear scan demonstrated a complete lack of function in the right kidney.

Implications:

Related Experiment Videos

  • Contrast material within the collecting system on CT, especially with a small, non-enhancing kidney, is a key indicator of vesicoureteral reflux.
  • This finding highlights the importance of considering reflux in the differential diagnosis of renal imaging abnormalities.
  • Integrating CT findings with functional studies like nuclear scans is crucial for accurate diagnosis and management.