NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,031 terms related to cancer and medicine.
- listen (up-STAY-jing)
- In cancer, changing the stage used to describe a patient’s cancer from a lower stage (less extensive) to a higher stage (more extensive). Upstaging is based on the results of additional staging tests. It is important to know the stage of the disease in order to plan the best treatment.