GlossaryNCCN Cancer Centers
| The National Comprehensive Cancer Network (NCCN) is a not-for-profit alliance of 23 of the world’s leading cancer centers. We are dedicated to improving the quality and effectiveness of care provided to people with cancer. |
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Glossary of terms used on this site
| Term | Definition |
|---|---|
| Human papilloma virus |
A member of a family of viruses that can cause abnormal tissue growth (for example, genital warts) and other changes to cells. Infection with certain types of HPV increases the risk of developing cervical cancer. Also called HPV. |
| Human T-cell leukemia virus type 1 |
A type of virus that infects T cells (a type of white blood cell) and can cause leukemia and lymphoma. Human T-cell leukemia virus type 1 is spread by sharing syringes or needles, through blood transfusions or sexual contact, and from mother to child during birth or breast-feeding. Also called HTLV-1 and human T-cell lymphotropic virus type 1. |
| Hyperplasia |
An abnormal increase in the number of cells in an organ or tissue. |
