Lucy Davis, who played Dawn Tinsley in the original UK version of The Office, has revealed she has "incurable" breast cancer. "A year-and-a-half ago I was diagnosed with stage 4 breast cancer, which has metastasised [spread] to my bones. The cancer is incurable, and too late for chemo." Symptoms of breast cancerAccording to Cancer Research UK, stage four breast cancer is a cancer that starts in the breast tissue but spreads to another part of the body, making it incurable. The main symptoms of breast cancer in women may include a lump or swelling in your breast, chest or armpit, the NHS website says.