Period IStage IIThe very first stage of cancer is Phase 0, or carcinoma in situ, which can be noninvasive cancer. In the inner most layer of the bile duct, as stated by the American Cancer Society, the cancer is in this phase, known as the mucosa. It's not in any lymph glands or other organs.Period IIIBile duct cancer involves one tumor that's started to invade into more levels of the wall of the ...
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