What is the Gleason System for grading cancer?
According to the National Cancer Institute, one way of grading prostate cancer is the Gleason System. This grading system is based on a number range from 2 to 10. The lower the number, the lower the grade, and the slower the cancer is growing. The higher the score, the higher the grade of the tumor. High-grade tumors grow more quickly than low-grade tumors and are more likely to spread to other parts of the body. • Grades under 4 – mean that the cancer cells look similar to your normal cells and the cancer is likely to be less aggressive. • Grades 5 to 7 – are in the intermediate range. This range means that the cancer cells do not look like normal cells and are more likely to be aggressive and grow faster. • Grades 8 to 10 – indicate that the cancer cells are more likely to be very aggressive in growth.
According to the National Cancer Institute, one way of grading prostate cancer is the Gleason System. This grading system is based on a number range from 2 to 10. The lower the number, the lower the grade, and the slower the cancer is growing. The higher the score, the higher the grade of the tumor. High-grade tumors grow more quickly than low-grade tumors, and are more likely to spread to other parts of the body. • Grades under 4 mean that the cancer cells look similar to your normal cells, and the cancer is likely to be less aggressive. • Grades 5 to 7 are in the intermediate range. This means that the cancer cells do not look like normal cells, and are more likely to be aggressive and grow faster. • Grades 8 to 10 indicate that the cancer cells are more likely to be very aggressive in growth.
According to the National Cancer Institute, one way of grading prostate cancer is the Gleason System. This grading system is based on a number range from 1 to 5. The lower the number, the lower the grade, and the slower the cancer is growing. High grade tumors (4 and 5) grow more quickly than low grade tumors (1 and 2), and are more likely to spread to other parts of the body. The Gleason Score represents the sum of the two most common grades observed by the pathologist on a specimen (e.g. Gleason Score = 7 could be 3 + 4 or 4 + 3). The first number is the most frequent grade seen.
