A grade of Non-Hodgkinâ€(tm)s denoting fast growth. NHL types that are high grade are Burkittâ€(tm)s Lymphoma, non-Burkittâ€(tm)s, diffuse, leukemia/lymphoma, lymphoblastic and T-cell.
When referring to cancerous and precancerous growths, a term used to describe cells that look abnormal under a microscope. These cells are more likely to grow and spread quickly than cells in low-grade cancerous and precancerous growths.
A type of timber harvesting in which larger trees of commercially valuable species are removed with little regard for the quality, quantity, or distribution of trees and regeneration left on the site; often results when a diameter harvest is imposed.