Cancer Stages
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Recurrent
Cancer cells have reappeared after treatment.
Stage 3
Cancer cells have spread beyond the primary cancer site to nearby areas.
Stage 1
Cancer cells have spread to deeper cell layers or some may have spread to surrounding tissues.
Stage 4
Cancer cells have spread to other organs of the body.
Stage 2
Cancer cells have spread to surrounding tissues but are considered contained in the primary cancer site.
Stage 0
Very early cancer. Cancer cells are localized in a few cell layers.