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Diffusely increased Tc-99m-MDP uptake in both kidneys.

K Koizumi, N Tonami, K Hisada

    Clinical Nuclear Medicine
    |August 1, 1981
    PubMed
    Summary
    This summary is machine-generated.

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    Diffuse increased uptake in kidneys on bone scans, termed "host kidneys," was observed in 0.63% of patients. Renal vascular disease and iron overload are the primary causes of this finding in patients with various underlying conditions.

    Area of Science:

    • Nuclear Medicine
    • Radiology
    • Nephrology

    Background:

    • Bone scintigraphy using Technetium-99m-labeled methylene diphosphonate (Tc-99m-MDP) is a common imaging modality.
    • Diffuse renal uptake, often termed 'host kidneys,' is an uncommon finding on bone scans.

    Observation:

    • This study evaluated 2056 patients undergoing Tc-99m-MDP bone imaging.
    • A diffusely increased uptake in both kidneys was identified in 13 patients (0.63%).

    Findings:

    • The 13 patients with diffuse renal uptake had diverse underlying conditions including liver cirrhosis, lung cancer, hepatoma, Hodgkin's disease, malignant lymphoma, thyroid cancer, leukemia, sideroblastic anemia, and diabetes mellitus.
    • The primary etiologies identified for this scintigraphic finding were renal vascular disease and iron overload.

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    Implications:

    • Diffuse renal uptake on bone scans can indicate significant underlying pathology, particularly vascular disease or iron overload.
    • This finding warrants further investigation to determine the specific cause and guide patient management.
    • Understanding the causes of diffuse renal uptake enhances diagnostic accuracy in nuclear medicine and nephrology.