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Incidental renal mass

W D Livingston, T L Collins, D E Novicki

    Urology
    |March 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

    Ultrasound effectively evaluates renal masses 3cm+, but CT scanning is better for smaller lesions and distinguishing cysts. Both imaging methods are crucial for diagnosing incidental renal masses, with a 9.1% malignancy rate noted.

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    Area of Science:

    • Radiology
    • Urology
    • Oncology

    Background:

    • Incidental renal masses are frequently discovered during imaging for other conditions.
    • Accurate characterization of renal masses is essential for appropriate patient management and to rule out malignancy.

    Purpose of the Study:

    • To evaluate the diagnostic accuracy of sonography and computerized tomography (CT) scanning in characterizing incidentally discovered renal masses.
    • To determine the optimal imaging approach for incidentally found renal lesions.

    Main Methods:

    • Retrospective review of 55 patients with 64 incidentally discovered renal masses.
    • Evaluation using sonography and/or CT scanning.
    • Confirmation of mass nature via cyst puncture or surgical exploration.

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    Main Results:

    • Ultrasound accurately evaluated renal masses ≥3 cm but could not differentiate simple from hemorrhagic cysts.
    • CT scanning characterized lesions ≥1.5 cm.
    • Clearly cystic lesions on CT required no further evaluation; indeterminate or solid masses needed traditional workup.
    • A 9.1% incidence of malignant tumors was observed.

    Conclusions:

    • CT scanning is superior to ultrasound for characterizing smaller renal masses and differentiating cystic from solid lesions.
    • A comprehensive evaluation is necessary for all renal masses due to the significant incidence of malignancy.
    • CT findings can guide further management, reducing unnecessary interventions for clearly benign cystic lesions.