Staging considers the tumor size, lymph node involvement, and whether it's spread to other areas of the body. There are two other factors used to determine prostate cancer stage: grade grouping and PSA levels.
PSA is an enzyme that is produced by both normal and cancerous prostate cells and is secreted into the semen. A small amount of PSA is continually leaked into the blood stream, which is measured by the PSA test. A PSA level of 10 usually means your tumor is confined to the prostate. If your PSA is 20, it is more advanced, and surgery is usually not the best option.
Learn how to understand a prostate cancer pathology report.