Glossary Term:


Gleason grade



a number describing how abnormal prostate cancer cells look based on the Gleason system. A pathologist assigns a grade number from 1 through 5 based on how much the cancer cells under the microscope look like normal prostate cells. Those that look a lot like normal cells are graded 1, while those that look the least like normal cells are graded 5. See also Gleason score, grade, pathologist, prostate.