Definitions for grading
This page provides all possible meanings and translations of the word grading
the act of arranging in a graduated series
changing the ground level to a smooth horizontal or gently sloping surface
marking, grading, scoring(noun)
evaluation of performance by assigning a grade or score
"what he disliked about teaching was all the grading he had to do"
the act or method of arranging in or by grade, or of bringing, as the surface of land or a road, to the desired level or grade
In pathology, grading is a measure of the cell appearance in tumors and other neoplasms. Some pathology grading systems apply only to malignant neoplasms; others apply also to benign neoplasms. The neoplastic grading is a measure of cell anaplasia in the sampled tumor and is based on the resemblance of the tumor to the tissue of origin. Grading in cancer is distinguished from staging, which is a measure of the extent to which the cancer has spread. Pathology grading systems classify the microscopic cell appearance abnormality and deviations in their rate of growth with the goal of predicting developments at tissue level. Cancer is a disorder of cell life cycle alteration that leads to excessive cell proliferation rates, typically longer cell lifespans and poor differentiation. The grade score increases with the lack of cellular differentiation - it reflects how much the tumor cells differ from the cells of the normal tissue they have originated from. Tumors may be graded on four-tier, three-tier, or two-tier scales, depending on the institution and the tumor type.
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