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Related Experiment Videos

Urinomas secondary to pyelosinus backflow.

R M Friedenberg, H Moorehouse, M Gade

    Urologic Radiology
    |January 1, 1983
    PubMed
    Summary
    This summary is machine-generated.

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    Pyelosinus backflow is a benign urine release mechanism that can cause complications like urinomas or fibrosis. Understanding these risks is crucial for managing urinary tract issues.

    Area of Science:

    • Urology
    • Nephrology
    • Radiology

    Background:

    • Pyelosinus backflow, urine reflux into the renal pelvis and sinus, typically results from calyceal fornix infractions.
    • It often occurs due to urinary tract obstruction or during retrograde studies.
    • The primary driver is a rapid increase in intrapelvic pressure, with backflow acting as a physiological pressure-release mechanism.

    Observation:

    • While generally benign, pyelosinus backflow can lead to serious complications.
    • These include pseudocysts (urinomas) and retroperitoneal fibrosis.
    • Complications arise in individuals with impaired urine transport capacity, unable to manage pressure fluctuations.

    Findings:

    • The study presents cases of urinomas linked to upper tract obstruction.

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  • Causes include posterior urethral valves, ureteral obstruction (tumor, scarring, fibrosis, calculus).
  • Intrarenal urinomas are observed in kidneys with specific anatomical features preventing retroperitoneal leakage.

    • Implications:

    • Recognizing pyelosinus backflow is vital for diagnosing and managing urinary tract obstructions.
    • Early identification of potential complications like urinomas can guide treatment strategies.
    • This understanding aids in pediatric and adult urological care, particularly in cases of complex obstruction.