Medical Oncology Glossary
100 terms total — 4 showing — Last updated 15 Sep 2026
Ki-67 index
A measure of cellular proliferation expressed as the percentage of Ki-67 positive tumor cells, used in cancer prognosis and treatment decisions.
tumor microenvironment
The complex ecosystem surrounding cancer cells, including immune cells, blood vessels, and supportive tissues that influ...
tumor mutation burden
The total number of somatic mutations per megabase of DNA in a tumor, used as a biomarker for immunotherapy response.
tumor suppressor gene
Gene that normally prevents cancer development; loss of function contributes to malignant transformation.
VMAT
Volumetric Modulated Arc Therapy - a radiation therapy technique that delivers dose while rotating around the patient.