Prostate cancer Grading

Grade Group 1 The cells look similar to normal prostate cells. The cancer is likely to grow very slowly, if at all. Grade Group 2 Most cells still look similar to normal prostate cells. The cancer is likely to grow slowly Grade Group 3 The cells look less like normal prostate cells. The cancer is likely to grow at a moderate rate Grade Group 4 Some cells look abnormal. The cancer might grow quickly or at a moderate rate Grade Group 5 The cells look very abnormal. The cancer is likely to grow quickly