Objectives: To evaluate the similarity between Gleason grade on prostate biopsies and their final result after radical prostatectomy.
Methods: We retrospectively review the medical records of 129 patients who underwent radical prostatectomy. Mean PSA value was 10.7 ng/ml. The relationships between pathological reports of biopsies and radical prostatectomy specimens, and other variables such as PSA were established.
Results: Globally, 72 cases (55.8%) were in the same risk group by grade on biopsy and surgical specimen. Biopsy result was understaged in 48 cases (37.2%) and overstaged in 9 cases (7%). We found biopsy understaging in 42 cases (60%) in the low grade group, 6 cases (10.9%) in the intermediate grade group, and 50% in the high grade group, although in this latter the number of cases was very low.
Conclusions: Overall biopsy understaging was 37.2%, being much more evident in low grade tumors (60%). It seems that understaging was greater when PSA > 10 ng/ml, although differences were not significant.