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Related Experiment Videos

Lower moiety hydronephrosis in duplicated kidneys.

E S Amis, J J Cronan, R C Pfister

    Urology
    |July 1, 1985
    PubMed
    Summary
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    Lower pole obstruction in duplicated kidneys can mimic reflux nephropathy. This study details eleven cases, highlighting diverse causes beyond reflux, including ureteropelvic junction issues and ectopic ureteroceles.

    Area of Science:

    • Pediatric Urology
    • Renal Tract Development
    • Urologic Pathology

    Background:

    • Lower pole moiety dysfunction in duplicated kidneys is often initially attributed to reflux nephropathy.
    • Obstruction is a common complication, particularly in the upper pole, but also occurs in the lower pole with varied etiologies.
    • Lower pole obstruction can present complex and confusing clinical scenarios.

    Purpose of the Study:

    • To investigate the diverse causes of lower pole moiety obstruction in duplicated renal systems.
    • To differentiate lower pole obstruction from reflux nephropathy in pediatric patients.
    • To analyze eleven cases of lower pole obstruction to understand their presentations and pathologies.

    Main Methods:

    • Retrospective case series analysis of eleven patients with duplicated kidneys and lower pole obstruction.

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  • Review of clinical presentations, imaging findings, and pathological diagnoses.
  • Categorization of obstructive etiologies affecting the lower pole moiety.

    • Main Results:

    • Identified multiple etiologies for lower pole obstruction, including ureteropelvic junction obstruction in both complete and incomplete duplications.
    • Documented obstruction due to calculi and epithelial tumors within the lower urinary tract.
    • Observed cases where an ectopic upper pole ureterocele caused extrinsic compression and obstruction of the lower pole ureteral orifice.

    Conclusions:

    • Lower pole obstruction in duplicated kidneys has a broader differential diagnosis than initially presumed.
    • Etiologies range from intrinsic ureteropelvic junction issues to extrinsic compression by anomalies like ureteroceles.
    • Accurate diagnosis requires consideration of diverse pathologies to guide appropriate management.