NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,660 terms related to cancer and medicine.
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- stage IV thymoma
- listen (... thy-MOH-muh)
Stage IV is divided into stages IVA and IVB, depending on where the cancer has spread. In stage IVA, cancer has spread widely around the lungs and heart. In stage IVB, cancer has spread to the blood or lymph system.