are found during the pathologist,s examination of the
prostate biopsy core samples. If the core samples that
show prostate cancer are well-differentiated, the cells
appear similar to healthy cells. Prostate cancer that
is made up well-differentiated cells is smaller and
less aggressive than prostate cancer composed of poorly-differentiated
cells. The cells examined during the prostate biopsy
give a patient his Gleason grade and Gleason score.