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AJCC TNM (7th ed) Staging System of Gastric Cancer

    • The AJCC TNM staging system uses three basic descriptors that are then grouped into stage categories
    • The first component is “T”, which describes the extent of the primary tumor
    • The next component is “N”, which describes the absence or presence and extent of regional lymph node metastasis
    • The third component is “M”, which describes the absence or presence of distant metastasis
    • The final stage grouping (determined by the different permutations of “T”, “N”, and “M”) range from stage 0 through stage IV