Stage 0. This stage describes cancer in situ. In situ means "in place." Stage 0 cancers are still located in the place they started. They have not spread to nearby tissues. This stage of cancer is often curable. Surgery can usually remove the entire tumor.
Stage I. This stage is usually a cancer that has not grown deeply into nearby tissues. It also has not spread to the lymph nodes or other parts of the body. It is often called early-stage cancer.
Stage II and Stage III. In general, these 2 stages are cancers that have grown more deeply into nearby tissue. They may have also spread to lymph nodes but not to other parts of the body.
Stage IV. This stage means that the cancer has spread to other organs or parts of the body. It may be also called advanced or metastatic cancer.
1 - 1 of 1 Replies
This is a great simple explanation from Cancer . net here is the link to read more https://www.cancer.net/navigating-cancer-care/diagnosing-cancer/stages-cancer