stage IVC

Definition of stage IVC maxillary sinus cancer
National Cancer Institute

stage IVC maxillary sinus cancer

(...MAK-sih-LAYR-ee SY-nus KAN-ser)
Stage IV maxillary sinus cancer is divided into stages IVA, IVB, and IVC. In stage IVC, cancer may be found anywhere in or near the maxillary sinus, may have spread to lymph nodes, and has spread to organs far away from the maxillary sinus, such as the lungs.

Source: NCI Dictionary of Cancer Terms