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Related Experiment Videos

[Echography in pyelocaliceal tumors].

J Bloncourt1, A Dana, C Galakhoff

  • 1Service de Radiologie urinaire, Hôpital Necker, Paris.

Journal De Radiologie
|February 1, 1989
PubMed
Summary

Pyelography demonstrates higher accuracy than ultrasonography for detecting pyelocaliceal tumors. However, ultrasonography is recommended first for suspected tumors, especially with hematuria, to identify stones or obstruction.

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Area of Science:

  • Urology
  • Diagnostic Imaging

Background:

  • Pyelocaliceal tumors require accurate and timely diagnosis.
  • Evaluating diagnostic imaging modalities is crucial for patient management.

Purpose of the Study:

  • To compare the diagnostic accuracy of pyelography and ultrasonography for pyelocaliceal tumors.
  • To determine the optimal sequence of imaging for suspected excretory tract tumors.

Main Methods:

  • Retrospective review of pyelographic and sonographic reports for over 32 patients with pyelocaliceal tumors (>1 cm).
  • Pathological examination confirmed definitive diagnoses.
  • Triple-blind re-reading of ultrasonographic documents was performed.

Main Results:

  • Pyelography showed higher accuracy (31/32 tumors) compared to ultrasonography (12/27 diagnosed, 15 overlooked, 5 errors).

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  • Ultrasonography performance improved when intravenous pyelogram results were known beforehand.
  • Specific indications for ultrasonography include identifying stones or confirming tumor-related obstruction in silent kidneys.

    • Conclusions:

    • Pyelography is more accurate for diagnosing pyelocaliceal tumors.
    • Ultrasonography should be the initial imaging modality for suspected excretory tract tumors, particularly in cases of hematuria.
    • Ultrasonography aids in diagnosing stones and tumor-induced obstruction.