Former President Joe Biden has been diagnosed with aggressive prostate cancer, with the cancer cells having spread to the bone. Biden맥스카지노�s office said his Gleason score is 9. What is a Gleason score?Prostate cancers are graded for aggressiveness using what맥스카지노�s known as a Gleason score. The scores range from 6 to 10, with 8, 9 and 10 prostate cancers behaving more aggressively. Why are Gleason scores important?The score helps doctors develop treatment plans and can give a patient a better understanding of what to expect after treatment.How are Gleason scores calculated?A Gleason score is calculated after studying tissue samples under a microscope. Two tissue samples are selected and are each graded on a scale of 1 to 5. The two grades are added together to make up a Gleason score.The lower the grade, the more cancer cells look like normal cells. A Gleason score of 8, 9 or 10 means that the cells look very different from healthy cells, which is called poorly differentiated or undifferentiated, according to the Cleveland Clinic. Biden맥스카지노�s office said his score was 9, suggesting his cancer is among the most aggressive.He is reviewing treatment options with his doctors.