Cancer Stages

Staging cancers is significant, because the doctors are allowed to evaluate cancer and use the same terminology to describe it, so with this, the medical team can work jointly to develop the most excellent course of treatment. The stages of cancer are categorized according to its severity.

A familiar system in staging cancers is from zero up to four, where cancer in stage zero is relentless, stage I if its growth is restricted to its primary site and stage IV is the mainly aggressive. Stage II and stage III described tumors that fall between these extremes.

The staging of cancer forms classification of cancer describing the extent (spread) of the disease.
Stage Grouping uses numerals I, II, III, and IV (plus the 0) to describe the progression of cancer. This system is also referred to as Roman Numeral Staging.

Stage 0 Tumor in situ.

Stage I Tumor restricted to its tissue of origin, growth of tumor is localized

Stage II Cancers are locally limited in spreading

Stage III Cancers are local and regional

Stage IV Cancers spread to other organs or throughout the body

Another system use by some doctor to stage cancer is called TNM system. In the TNM system cancer are ranks with three separate parameters: size of the tumor, association of lymph node, and lastly the metastasis. Three tumor criteria are assigned modifying subscript number related to size, or degree, with lower numbers indicating low degree and higher numbers referring to increasing degrees.

The T component refers to the size of primary tumor. T0 indicates that no tumor can be found at the primary site, while T1, T2 and T3 indicate tumors of increasing size.

The N element indicates the degree to which regional lymph nodes are involved is indicated by. N0 denotes there is no evidence of regional lymph node enlargement, while N1, N2 and N3 reveal increasing degrees of node involvement.

The M component refers to tumor metastasis, with M0 means that there is no indications of metastasis are present, while M1, M2, and M3 indicate progressively more extensive spread.