Epstein et al. recently proposed a new PC grading system based on the Gleason scores with grade group 1 including all Gleason score 6, grade group 2 including Gleason score 3 + 4, grade group 3 Gleason score 4 + 3, grade group 4 Gleason score 8, and grade group 5 Gleason score 9 10 PC.
PC-grade technology was now commonplace and boring.
Therefore, the treatment algorithm proposed in the Tokyo guidelines with regard to PC for grade II and grade III AC were not employed in this study due to this regional difference.
A biopsy may reasonably be deferred, or if a biopsy shows low grade PC in a few cores, this patient is a good candidate for active surveillance.
Higher grade PC are histologically associated with more pronounced destruction of the normal ductular system, more solid areas of tumour cells and less fluid content as compared to lower grade PC, and, consequently, show a higher detectability on mpMRI [64, 65, 66, 92].
Negative predictive values (NPV) of 63-91 % are reported for PC of any grade, and 92-100 % for clinically significant PC (depending on the definition of clinically significant disease used) in low risk men (PSA <10, DRE normal, no family history) [13, 28, 59, 69, 70, 71, 72, 73, 74, 75, 81, 101, 103].
The highest optic density was found in PC and high grade Gleason samples [ 31].
The highest optic density was detected in PC and High grade PIN samples (Table 3) [ 31].
Prostates were obtained from radical prostatectomy from 19 men (aged from 57 to 88 years) diagnosed with PC (dominant Gleason grade ≥ 8).
In PC and high grade Gleason, immunostaining was nuclear in most of 14% of patients and cytoplasmic in most of 50% of patients (Table 3).
The low numbers of Caucasians may have limited our ability to detect significant associations within this group given that they were less likely to present a high grade PC tumor.
