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Difference between revisions of "Prostate cancer grading"
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**''Gleason score 3+4=7'' means: pattern 3 is present and dominant, pattern 4 is the remainder of the tumour - but present in a lesser amount than pattern 3. | **''Gleason score 3+4=7'' means: pattern 3 is present and dominant, pattern 4 is the remainder of the tumour - but present in a lesser amount than pattern 3. | ||
**''Gleason score 4+5=9'' means: pattern 4 is present and dominant, pattern 5 is present in a lesser amount that pattern 4. Pattern 3 may be present in a quantity less than pattern 4 or is absent. | **''Gleason score 4+5=9'' means: pattern 4 is present and dominant, pattern 5 is present in a lesser amount that pattern 4. Pattern 3 may be present in a quantity less than pattern 4 or is absent. | ||
**If a lower grade pattern is present and less than 5% it is ignored. | |||
***A biopsy with 98% Gleason pattern 4 and 2% Gleason pattern 3 would be graded as 8/10 (4+4). | |||
*Reported as on prostatectomies as: (primary pattern) + (secondary pattern) = sum, (tertiary pattern) | *Reported as on prostatectomies as: (primary pattern) + (secondary pattern) = sum, (tertiary pattern) | ||