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Related Experiment Videos

Pyonephrosis.

I Watt, J Roylance

    Clinical Radiology
    |October 1, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Pyonephrosis, a kidney infection, presents with diverse clinical and radiological signs. High-dose excretion urography is crucial for diagnosing this spectrum of kidney disease.

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    Area of Science:

    • Nephrology
    • Radiology
    • Urology

    Background:

    • Pyonephrosis, characterized by pus within the renal pelvis, presents a diagnostic challenge.
    • Understanding its clinical and radiological spectrum is vital for effective management.

    Purpose of the Study:

    • To review the clinical and radiological features of pyonephrosis.
    • To evaluate diagnostic modalities and their effectiveness.

    Main Methods:

    • Retrospective review of 40 consecutive pyonephrosis cases.
    • Analysis of clinical presentations, laboratory findings, and radiological imaging (plain films, high-dose excretion urography).

    Main Results:

    • Peak incidence in the 50-59 age group, with a higher prevalence in females.

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  • Common symptoms include loin pain and lower urinary tract symptoms; renal mass palpable in 58%.
  • Radiological findings include enlarged kidney outline (75%), absent psoas shadow (63%), and calculi (60%). High-dose urography yielded nephrograms in 58% and pyelograms in 34%.

    • Conclusions:

    • Pyonephrosis exists on a spectrum from infected hydronephrosis to xanthogranulomatous pyelonephritis.
    • Increasing chronicity correlates with calculi, loss of renal/psoas outlines, and reduced renal function.
    • High-dose excretion urography is the preferred investigation for diagnosis and pathological assessment.