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Related Experiment Videos

Intermittent hydronephrosis: a diagnostic challenge.

Y L Homsy1, P H Mehta, D Huot

  • 1Division of Pediatric Urology, Hôpital Sainte Justine, Université de Montréal, Quebec, Canada.

The Journal of Urology
|November 1, 1988
PubMed
Summary
This summary is machine-generated.

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Diagnosing intermittent hydronephrosis is challenging due to subtle imaging findings. A specific "double-peak" pattern in renography aids in early detection of this disabling condition.

Area of Science:

  • Urology
  • Diagnostic Imaging
  • Nuclear Medicine

Background:

  • Intermittent hydronephrosis presents diagnostic challenges due to mild pelvicaliceal dilatation on imaging.
  • Accurate diagnosis is crucial as the condition can be disabling.

Observation:

  • Standard diagnostic methods include diuretic excretory urography, ultrasonography, and renal scans.
  • A specific delayed "double-peak" pattern was observed during 99mtechnetium-diethylenetriaminepentaacetic acid (DTPA) diuretic renography.

Findings:

  • This double-peak pattern indicates the ureteropelvic junction can self-obstruct under forced diuresis.
  • Patients exhibiting this sign invariably developed overt obstruction, often with an extrinsic component.

Implications:

Related Experiment Videos

  • Recognition of the double-peak pattern on DTPA renography can significantly aid in the early diagnosis of intermittent hydronephrosis.
  • This finding may improve patient outcomes by enabling timely intervention for a disabling condition.