Roach formula (Seminal Vesicle)
A simple equation for estimating the risk of seminal vesicle invasion was derived from a nomogram published by Partin et al. demonstrating the value of combining the pre-treatment prostate specific antigen and Gleason Score in predicting the risk of seminal vesicle invasion for patients with clinically localized prostate cancer. The risk of positive seminal vesicles (SV+) was calculated using the equation; SV+ = (PSA) + (10 * ((Gleason score) - 6)).
Research authors: Mack Roach III
Details Formula Study characteristics Files & References
Model author
Model ID
1143
Version
1.8
Revision date
2018-03-13
Specialty
MeSH terms
  • Prostate Cancer
  • Seminal Vesicle
  • Model type
    Custom model (Calculation)
    Status
    public
    Rating
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    Formula

    Additional information

    No additional information available

    Study Population

    Total population size: 0

    Additional characteristics

    No additional characteristics defined
    Roach formula (Seminal Vesicle)
    V-1.8-1143.18.03.13
    Refer to Intended Use for instructions before use
    Evidencio B.V., Irenesingel 19, 7481 GJ, Haaksbergen, the Netherlands

    Related files

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    Calculated risk for Seminal Vesicle invasion is:
    ...
    %

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    Calculated risk for Seminal Vesicle invasion is: %

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    Outcome stratification

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    Result interpretation

    The risk of seminal vesicle invasion supports decision making for urologists and oncologists regarding the extent of primairy treatments such as radical prostatectomy or radical radiation therapy in patients diagnosed with prostate cancer. 

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    Calculations alone should never dictate patient care, and are no substitute for professional judgement. See our full disclaimer.

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