Grading
Grading (medicine)
Grading (pronunciation: /ˈɡreɪdɪŋ/) in the field of medicine refers to the process of classifying tumors based on their histological characteristics, including cell differentiation and number of mitoses. The grade of a tumor can provide insight into its potential behavior, including its likelihood of metastasizing and its response to therapy.
Etymology
The term 'grading' originates from the Latin word 'gradus', which means 'step' or 'degree'. In the medical context, it is used to denote the severity or extent of a condition.
Grading Systems
There are several grading systems used in medicine, including:
- The Gleason Grading System, used for prostate cancer
- The Nottingham Grading System, used for breast cancer
- The Fuhrman Grading System, used for renal cell carcinoma
Each of these systems uses a different set of criteria to assess the grade of a tumor, but all aim to provide a standardized way of describing the tumor's characteristics and predicting its behavior.
Related Terms
- Staging: The process of determining the extent of a cancer in the body
- Histopathology: The study of changes in tissues caused by disease
- Mitosis: A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus
External links
- Medical encyclopedia article on Grading
- Wikipedia's article - Grading
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