Following the biopsy lab analysis, your doctor will share the results with you, which will include the type and grade of the tumor. Primary brain tumors are named based on the type of cells they formed in, while the grade of a tumor indicates the difference between slow-growing and fast-growing tumors. Tumor grades are based on how abnormal the cancer cells look under a microscope or by looking at changes in genes or proteins. Knowing the grade helps to predict a tumor’s likely behavior.
Low-grade tumors can become high-grade tumors. While a tumor may show characteristics from one or more tumor grades, doctors treat patients based on the highest-level tumor grade.
Source: National Cancer Institute
Hearing from others who have been affected by a brain tumor can help guide you through your journey.