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Inverted papilloma of the renal pelvis

D Assor

    The Journal of Urology
    |November 1, 1976
    PubMed

    Insights

    This report details a rare case of a benign urothelial tumor in the renal pelvis, resembling an inverted papilloma. This finding is compared to similar bladder tumors, offering insights into urothelial neoplasia.

    Area of Science:

    • Uro-oncology
    • Pathology
    • Nephrology

    Background:

    • Urothelial tumors typically affect the bladder.
    • Renal pelvis tumors are less common and diverse.
    • Inverted papilloma is a rare benign urothelial neoplasm.

    Observation:

    • A case of a renal pelvis tumor with benign morphology is presented.
    • The lesion exhibits characteristics similar to inverted papilloma.
    • This contrasts with the more common urothelial carcinoma of the renal pelvis.

    Findings:

    • The renal pelvis tumor morphologically resembles inverted papilloma.
    • Comparison is made to 28 cases of bladder inverted papilloma.
    • This case expands the known locations for inverted papilloma-like urothelial tumors.

    Implications:

    • Highlights the potential for benign urothelial neoplasms in the renal pelvis.
    • Suggests a need for careful histological evaluation to differentiate benign from malignant lesions.
    • Contributes to understanding the spectrum of urothelial tumor morphology and behavior.

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