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Bone scan patterns in acute osteomyelitis.

P V Scoles, M D Hilty, G N Sfakianakis

    Clinical Orthopaedics and Related Research
    |November 1, 1980
    PubMed
    Summary
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    Serial bone scans in acute hematogenous osteomyelitis show two distinct patterns. Lesion-to-normal bone ratios can increase or decrease during treatment, indicating varied disease progression in pediatric patients.

    Area of Science:

    • Nuclear Medicine
    • Pediatric Orthopedics
    • Radiology

    Background:

    • Acute hematogenous osteomyelitis is a serious bone infection in children.
    • Accurate diagnosis and monitoring of treatment response are crucial.
    • Technetium-99m-diphosphonate bone scintigraphy is a common imaging modality.

    Purpose of the Study:

    • To evaluate serial changes in bone scan activity ratios in pediatric osteomyelitis.
    • To identify patterns of scintigraphic response to therapy.
    • To assess the diagnostic utility of early bone scans.

    Main Methods:

    • Sixteen pediatric patients with acute hematogenous osteomyelitis were studied.
    • Serial Tc-99m-diphosphonate bone scans were performed on admission and during hospitalization.

    Related Experiment Videos

  • Computer-assisted analysis determined the ratio of activity in the lesion to normal bone.

    • Main Results:

    • Two distinct patterns of lesion-to-normal bone activity ratios were observed.
    • Seven patients showed an initial low ratio that increased during therapy.
    • Nine patients exhibited an initial high ratio that decreased with treatment.
    • Initial scans within three days of onset did not reliably exclude osteomyelitis.

    Conclusions:

    • Serial bone scintigraphy reveals heterogeneous patterns of activity changes in pediatric osteomyelitis.
    • The observed patterns may reflect different underlying disease processes or treatment responses.
    • Early bone scans should be interpreted cautiously, as a lack of uptake does not rule out the diagnosis.