Joe Biden has been diagnosed with aggressive prostate cancer with a Gleason score of 9. Experts break down the grading system and potential treatment options.

The Gleason score is a grading system for prostate cancer, according to the Cleveland Clinic. It usually ranges from a 6, which is low-grade cancer, to a 10, which is considered a high-grade cancer.

"The Gleason score is a grading system used by urologists to assess a prostate cancer’s aggressiveness based on how cells from the tumor look under a microscope," Fox Chase Cancer Center explains.

Dr. Donald Gleason. In medicine, technological advances and breakthroughs happen at lightning-paced speeds. But in the realm of prostate cancer, one major development, the Gleason grading system for ...

ABC News has broken down what former President Biden's prostate cancer diagnosis means and what possible treatments can be done.

The Gleason score is a grading system used by doctors to evaluate prostate cancer based on how the cancer cells look under a microscope. When a biopsy is done, small tissue samples are taken from ...

The Grade Group is the most common system doctors use to grade prostate cancer. It has replaced the Gleason score. The grade of a cancer tells you how much the cancer cells look like normal cells.

Former President Joe Biden has been diagnosed with metastatic prostate cancer at age 82. Here's what to know about the disease, its symptoms and treatments.

Former U.S. President Joe Biden’s recent cancer diagnosis brought widespread attention to what is known as the “Gleason score,” a grading system used to assess the prognosis of men with prostate ...

The Gleason grading system, or Gleason score, refers to how likely the cancer is to advance and spread, but does not predict the outcome.

The Gleason score, also known as the Gleason index, is a grading system that assesses how aggressive prostate cancer is by examining the appearance of cancer cells under a microscope.