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The pathologist then sums the pattern-number of the primary and secondary grades to obtain the final Gleason score. If only two patterns are seen, the first number of the score is that of the tumor's primary grade while the second number is that of the secondary grade, as described in the previous section.
A more refined prognosis can be established by consideration of prostate-specific antigen, and grade (i.e. Gleason score in the Gleason grading system). For example, it is common to classify patients into high, intermediate and low-risk groups on the basis of these three factors (TNM stage, PSA and Gleason score).
If cancer is present, the pathologist assigns a Gleason score; a higher score represents a more dangerous tumor. Medical imaging is performed to look for cancer that has spread outside the prostate. Based on the Gleason score, PSA levels, and imaging results, a cancer case is assigned a stage 1 to 4. A higher stage signifies a more advanced ...
Of the many cancer-specific schemes, the Gleason system, [3] named after Donald Floyd Gleason, used to grade the adenocarcinoma cells in prostate cancer is the most famous. This system uses a grading score ranging from 2 to 10. Lower Gleason scores describe well-differentiated less aggressive tumors.
Therefore, the Gleason score is actually a combination or sum of two numbers. These combined Gleason sums or scores may be determined as follows: 1. The lowest possible Gleason score is 2 (1 + 1), where both the primary and secondary patterns have a Gleason grade of 1 and therefore when added together their combined sum is 2. 2.
Your credit score is a vital aspect of your finances, with everything from job prospects to finding a place to live hinging on whether you have good credit or bad credit. But hidden within your ...