Introduction:

The Gleason scale is a fundamental histopathological diagnostic tool, which directly influences decision-making in the treatment of prostate cancer as well as the prognosis. There are discrepancies in the score obtained through the biopsy and its correlation when obtaining the sample by radical prostatectomy.

Objective:

To analyze the concordance of the Gleason scale score obtained by transrectal biopsy and radical prostatectomy.

Patients and Methods:

A descriptive cross-sectional study of concordance of diagnostic tests of pathology records of prostate biopsies and radical prostatectomies performed between 2016-2019 was carried out. Cohen's Kappa correlation index was used to determine agreement between variables. Tables and graphs were used to show the results.

Results:

The Cohen's Kappa concordance index for Gleason in risk group was 0.154 and weighted Kappa was 0.379, implying a poor and weak concordance respectively between the pathological results of the transrectal prostate biopsy with that of the radical prostatectomy. Being understaged in 11.20%, concordant in 43.80% and overstaged in 45%.

Conclusions:

We found a low concordance of the Gleason score in transrectal prostate biopsy and radical prostatectomy, coinciding with some published reports; most of the patients presented an overestimation in our study. This possibility should be taken into consideration when taking a patient for treatment.

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