496 / 1109
Mr R, 80 years old
Prostate biopsy: Prostate cancer in right prostate lobe, Gleason score 6
Gleason score:
- based on patterns:
Pattern 1: normal prostate with small, well-formed glands
corresponds to a well differentiated carcinoma
Pattern 5: tissue does not have any or only a few prostate glands
corresponds to a poorly differentiated carcinoma
- grading: sum of dominant pattern and next-most frequent pattern
e.g. 3 + 4 = 7
Low-risk: Gleason score ≤ 6, High-risk: Gleason ≥ 8