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Related Experiment Videos

Renal colic: diagnosis and outcome.

M C Haddad1, H S Sharif, M S Shahed

  • 1Department of Diagnostic Radiology and Imaging, Riyadh Armed Forces Hospital, Saudi Arabia.

Radiology
|July 1, 1992
PubMed
Summary

Ultrasonography (US) with or without kidney, ureter, bladder (KUB) radiography can effectively replace intravenous urography (IVU) for diagnosing acute urinary tract obstruction in renal colic patients. These imaging methods offer high sensitivity and specificity, ensuring accurate detection.

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Area of Science:

  • Radiology
  • Urology
  • Diagnostic Imaging

Background:

  • Intravenous urography (IVU) is a standard diagnostic tool for acute urinary tract obstruction.
  • Evaluating alternative imaging modalities is crucial for patient care and resource optimization.

Purpose of the Study:

  • To determine if ultrasonography (US), with or without kidney, ureter, bladder (KUB) radiography, can replace IVU in detecting acute urinary tract obstruction.
  • To compare the diagnostic performance of US and KUB radiography against IVU.

Main Methods:

  • 101 consecutive patients with renal colic underwent immediate US followed by IVU.
  • Receiver operating characteristic (ROC) curves were used to analyze diagnostic performance (sensitivity and specificity).

Main Results:

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  • US demonstrated high sensitivity (91-92%) and specificity (90%) for detecting urinary tract obstruction, comparable to IVU.
  • Combining US with KUB radiography further improved sensitivity (94-97%) at 90% specificity.
  • KUB radiography alone had limited diagnostic value; US alone had no false positives but some false negatives in specific cases.

Conclusions:

  • Ultrasonography, particularly when combined with KUB radiography, is a viable alternative to IVU for evaluating most patients with renal colic.
  • This combined approach offers comparable diagnostic accuracy to IVU for acute urinary tract obstruction.