Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
    • Subcategory of 'Diagnosis' designed to be very sensitiveRule Out
    • Disease is diagnosed: prognosticate to guide treatmentPrognosis
    • Numerical inputs and outputsFormula
    • Med treatment and moreTreatment
    • Suggested protocolsAlgorithm

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    Patent Pending

    Solitary Pulmonary Nodule (SPN) Malignancy Risk Score (Mayo Clinic Model)

    Predicts malignancy risk in solitary lung nodules on chest x-ray.
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    INSTRUCTIONS

    Do not use in patients with prior lung cancer diagnosis or with history of extrathoracic cancer diagnosed within 5 years of nodule presentation.

    When to Use
    • Patients with solitary lung nodule on chest x-ray.
    • Do not use in patients with prior lung cancer diagnosis or with history of extrathoracic cancer diagnosed within 5 years of nodule presentation.
    years
    mm
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1
    No
    0
    Yes
    +1
    PET not performed
    No uptake
    Faint uptake
    Moderate uptake
    Intense uptake

    Result:

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    Next Steps
    Evidence
    Creator Insights

    Advice

    One study (Gould 2003) suggests watchful waiting only at very low post-test probabilities (<2%), biopsy at "lower" post-test probabilities (2% to 20%), and surgery at higher post-test probabilities (>70%).

    About the Creator
    Dr. Stephen J. Swensen
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