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Computed tomography in calcified renal masses

W S Kim, S M Goldman, O M Gatewood

    Journal of Computer Assisted Tomography
    |December 1, 1981
    PubMed
    Summary

    For calcified renal masses, computed tomography (CT) can help determine if angiography is useful. Angiography is most informative for masses that show contrast enhancement on CT scans.

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    Area of Science:

    • Nephrology
    • Radiology
    • Medical Imaging

    Background:

    • Calcified renal masses present diagnostic challenges.
    • Differentiating benign from malignant lesions is crucial for patient management.
    • Advanced imaging techniques like computed tomography (CT) and angiography are employed.

    Observation:

    • Five patients with calcified renal masses underwent evaluation using both angiography and postcontrast CT.
    • CT scans were analyzed for contrast enhancement patterns.
    • Angiography was performed to assess vascularity.

    Findings:

    • Four out of five patients showed no contrast enhancement on CT scans.
    • These non-enhancing lesions corresponded to avascular hypernephromas (three cases) and a renal cyst (one case) on angiography.

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  • The fifth patient's lesion enhanced on CT, and angiography revealed it to be an aneurysm.

    • Implications:

    • Contrast enhancement on CT is a key indicator for the utility of angiography in evaluating calcified renal masses.
    • Avascular lesions on CT are unlikely to provide additional information via angiography.
    • This diagnostic approach can help differentiate aneurysms from other calcified renal masses.