Several different systems are used for ranking cancer stage in the development programme of treatment. Organize important cancers, because it allows doctors to evaluate cancer and use standard terminology to describe it, as the medical team work together to develop the best course of treatment. Stages in order to slow or non-aggressive cancers in the bottom of the table, and fast, and highly cancers at the top. very common system runs one to organize cancer cases from zero to four with a zero cancer is less severe, while four are the most aggressive. The system gradually alternate numbered Roman variant I, II, III and IV. Some doctors break Roman numeral staging system down more with classifications like IIA, and IIB to describe cancers which fall a bit between stages. some doctors use come to stage cancer, which ranked cancer with three separate parameters: Size of the tumor, lymph node involvement, and metastasis. For example, could be someone T3 N0 M1 cancer tumor, which means that, no lymph nodes involved, cancer cancerous started slightly. other oncologists indicate cancers in local and regional site and away when talking about cancer staging. In situ cancers are cancers that involve only certain cells, which means that caught early, or evolve slowly. Localized cancers affect a larger area, while regional cancer is cancer that has spread to nearby organs lymphatic glands. In cancer, cancer has spread to remove the body areas, reflecting the metastasis. This system is essentially interchangeable with the Roman System.
