Tertiary Gleason Patterns and Biochemical Recurrence After Prostatectomy: Proposal for a Modified Gleason Scoring System

Bruce J. Trock, Charles C. Guo, Mark L. Gonzalgo, Ahmed Magheli, Stacy Loeb, Jonathan I. Epstein

Research output: Contribution to journalArticle

77 Scopus citations

Abstract

Purpose: We investigated the relationship between the tertiary Gleason component in radical prostatectomy specimens and biochemical recurrence in what is to our knowledge the largest single institution cohort to date. Materials and Methods: We evaluated data on 3,230 men who underwent radical prostatectomy at our institution from 2000 to 2005. Tertiary Gleason component was defined as Gleason grade pattern 4 or greater for Gleason score 6 and Gleason grade pattern 5 for Gleason score 7 or 8. Results: Biochemical recurrence curves for cancer with tertiary Gleason component were intermediate between those of cancer without a tertiary Gleason component in the same Gleason score category and cancer in the next higher Gleason score category. The only exception was that Gleason score 4 + 3 = 7 with a tertiary Gleason component behaved like Gleason score 8. The tertiary Gleason component independently predicted recurrence when factoring in radical prostatectomy Gleason score, radical prostatectomy stage and prostate specific antigen (HR 1.45, p = 0.029). Furthermore, the magnitude of the tertiary Gleason component effect on recurrence did not differ by Gleason score category (p = 0.593). Conclusions: Although the tertiary Gleason component is frequently included in pathology reports, it is routinely omitted in other situations, such as predictive nomograms, research studies and patient counseling. The current study adds to a growing body of evidence highlighting the importance of the tertiary Gleason component in radical prostatectomy specimens. Accordingly consideration should be given to a modified radical prostatectomy Gleason scoring system that incorporates tertiary Gleason component in intuitive fashion, including Gleason score 6, 6.5 (Gleason score 6 with tertiary Gleason component), 7 (Gleason score 3 + 4 = 7), 7.25 (Gleason score 3 + 4 = 7 with tertiary Gleason component), 7.5 (Gleason score 4 + 3), 8 (Gleason score 4 + 3 with tertiary Gleason component or Gleason score 8), 8.5 (Gleason score 8 with tertiary Gleason component), 9 (Gleason score 4 + 5 or 5 + 4) and 10.

Original languageEnglish (US)
Pages (from-to)1364-1370
Number of pages7
JournalJournal of Urology
Volume182
Issue number4 SUPPL.
DOIs
StatePublished - Oct 1 2009
Externally publishedYes

Keywords

  • prognosis
  • prostate
  • prostatectomy
  • prostatic neoplasms
  • surgical pathology

ASJC Scopus subject areas

  • Urology

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