@ireland1964 The higher number indicates percentage of core with cancer (35%, 45%). The 10% pattern indicates the percentage of the total (i.e. 3.5% or 4.5% of core) that was 4. So that puts you as intermediate favorable 3+4 with a low percentage of 4. Since all cancer is on one side you are probably a good candidate for focal therapy such as Nanoknife, Tulsa Pro, Cyro, etc. if you do not want to do active surveillance. Any of the focal therapy will leave you with better quality of life than either RP or RT. Not sure these were mentioned; they do have higher recurrence rates.

It does look like the percentages came from a monogram that estimated chances based on PSA, number of cores, Gleason, age, etc. rather than any finding. Note that they all add up to 100%. So it is saying that with no other information (no PSMA PET, etc. to confirm) that there is only a 3% chance of being more than a EPE. The actual EPE tissue in the biopsy showed no cancer.