Breast Cancer Treatment (PDQ®): Treatment - Patient Information [NCI] - Stages of Breast Cancer
Cancer that has spread to the skin of the breast may also be inflammatory breast cancer. See the section on Inflammatory Breast Cancer for more information.
For treatment, stage IIIC breast cancer is divided into operable and inoperable stage IIIC.
Stage IV breast cancer. The cancer has spread to other parts of the body, most often the bones, lungs, liver, or brain.
In stage IV, cancer has spread to other organs of the body, most often the bones, lungs, liver, or brain.