Gleason grade

noun

Glea·​son grade ˈglē-sᵊn- 

1

: a grade given to each of the two most prevalent patterns of cancer cells in tissue obtained from biopsy of a prostate tumor that is based on a scale of 1 to 5 with 1 to 3 corresponding to well-differentiated cancer cells similar in appearance to normal cells in surrounding tissue and 4 to 5 corresponding to poorly differentiated cancer cells that look abnormal

2

: gleason score