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Related Experiment Videos

Renal metastases: clinicopathologic and radiologic correlation.

P L Choyke, E M White, R K Zeman

    Radiology
    |February 1, 1987
    PubMed
    Summary

    Renal metastases from non-lymphoma cancers are often found late and may mimic primary kidney cancer. Imaging, especially computed tomography, is key for diagnosis in patients with a history of cancer.

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    Area of Science:

    • Oncology
    • Radiology
    • Nephrology

    Background:

    • Renal metastases are secondary malignant tumors in the kidney.
    • Primary renal cell carcinoma is the most common kidney malignancy.
    • Differentiating renal metastases from primary kidney tumors can be challenging.

    Purpose of the Study:

    • To present the clinical and radiologic features of renal metastases.
    • To compare the incidence of renal metastases to primary renal cell carcinoma.
    • To evaluate the diagnostic utility of various imaging modalities.

    Main Methods:

    • Retrospective review of 27 patients with renal metastases from non-lymphomatous primary malignancies.
    • Analysis of clinical presentation, urinalysis, and radiologic findings.
    • Comparison of computed tomography, ultrasound, and intravenous urography.

    Main Results:

    • Renal metastases were detected late in malignancy course, often asymptomatic.
    • Metastases were typically multifocal but could be solitary and mimic primary renal cell carcinoma.
    • Computed tomography demonstrated the highest sensitivity (100%) in detecting renal metastases.

    Conclusions:

    • A new renal lesion in cancer patients is more likely metastatic than primary.
    • Renal metastases are more common than primary renal cell carcinoma in patients with a history of malignancy.
    • Biopsy may not be beneficial in diagnosing renal lesions in advanced cancer patients.

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