NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,459 terms related to cancer and medicine.
We offer a widget that you can add to your website to let users look up cancer-related terms. Get NCI’s Dictionary of Cancer Terms Widget.
- secondary tumor
- listen (SEH-kun-dayr-ee TOO-mer)
A term used to
describe cancer that has spread (metastasized) from the
place where it first started to another part of the body.
Secondary tumors are the same type of
cancer as the original (primary) cancer. For example,
cancer cells may spread from the breast (primary cancer) to
form new tumors in the lung (secondary tumor). The cancer cells in the lung are just
like the ones in the breast. Also called secondary cancer.