Roach Formulas
Simple equations for estimating the risk of seminal vesicle invasion, lymph node involvement and capsular penetration were 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, lymph node involvement, and capsular penetration 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)).
  • The risk of positive lymph nodes (LN+) was calculated using the equation; LN+ = (0.667 * (PSA)) + (10 * ((Gleason score) - 6))
  • The risk of positive capsular penetration (CP+) was calculated using the equation; CP+ = (1.5 * (PSA)) + (10 * ((Gleason score) - 3))

 
Research authors: Mack Roach III
Details Files & References
Composite
Model author
Version
1.3
Revision date
2018-05-08
Specialty
MeSH terms
  • Prostate Cancer
  • Lymph Nodes
  • Lymphadenectomy
  • Seminal Vesicles
  • Status
    public
    Share

    {{ resultSubheader }}

    {{ model.survival.PITTitle }}

    {{ model.survival.YNETitle }}

    Results
    Note
    Notes are only visible in the result download and will not be saved by Evidencio

    Composite model

    Conditional information

    Result interpretation

    {{ file.classification }}

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

    Comments
    Rating
    Comment
    Please enter a comment of rating
    Comments are visible to anyone

    Model feedback

    No feedback yet 1 Comment {{ model.comments.length }} Comments
    Not rated | On {{ comment.created_at }} {{ comment.user.username }} a no longer registered author wrote: