The most often used prostate cancer grading system is called the Gleason system. This system assigns a Gleason grade ranging from 1-5. The grade is based on how closely the arrangement of cancer cells resembles normal cells in a healthy gland. Because prostate cancers often have areas within them of different grades, a grade is assigned to the two areas that make up most of the cancer. These two grades are added together to give a Gleason score between 2 and 10. Tumors graded Gleason score 5-6 behave only slightly worse than tumors with sores of 2-4, but significantly better than tumors graded score 7.
a widely used method for classifying prostate cancer tissue for the degree of loss of the normal glandular architecture (size, shape and differentiation of glands); a grade from 1–5 is assigned successively to each the two most predominant tissue patterns present in the examined tissue sample and are added together to produce the Gleason score; high numbers indicate poor differentiation and therefore more aggressive cancer.
A number from 1 to 5 indicating how different a sample of prostate tissue looks when compared to normal prostate tissue.
A method of classifying how cells appear in cancerous tissues, the less the cancerous cells resemble normal cells, the more malignant the cancer. Two numbers, each from 1 to 5, are assigned to the two most predominant types of cells present. These two numbers are added together to produce a Gleason score between 2 and 10. Higher numbers indicate more aggressive cancers.
A commonly used grading system which measures how aggressive a tumor is. Grading is done in the lab with cells taken from the tumor. The grades range from 2 to 10. The lower the number the lower the grade.
The system used most often to grade prostate cancer. It assigns a score based on the arrangement of the cancer cells similarity to the way normal prostate cells are arranged in the prostate gland.
the most often used prostate cancer grading system is called the Gleason system. This system assigns a Gleason grade ranging from 1 through 5 based on how much the arrangement of the cancer cells looks like the way normal prostate cells are arranged in the prostate gland. Because prostate cancers often have areas with different grades, a grade is assigned to the two areas that make up most of the cancer. These two grades are added together to give a Gleason score between 2 and 10. See also Gleason score; grade.