Early warning signs of stage 0 cancer: Recognising carcinoma in situ in mouth, skin, breast, and more |
Stage 0 cancer, medically known as carcinoma in situ (CIS), represents the very beginning of cancer development. At this stage, abnormal cells are found in the tissue where they first appeared, but have not invaded deeper layers or spread to other parts of the body. The term “in situ” literally translates to “in its original…