stage IVC

Definition of stage IVC anaplastic thyroid cancer
National Cancer Institute

stage IVC anaplastic thyroid cancer

(... A-nuh-PLAS-tik THY-royd KAN-ser)
Stage IV is divided into stages IVA, IVB, and IVC. In stage IVC, the tumor is any size and cancer has spread to other parts of the body, such as the lungs or bones. Cancer may have spread to lymph nodes.

Source: NCI Dictionary of Cancer Terms