Digestive System Cells

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Treatment Options by Stages


Occult Stage

In the occult stage (TX, N0, M0), cancer cells are found in a sample of a patient's coughed-up sputum, but no cancer cells have yet been detected in the lung.

Treatment Options. Surgically removing the tumor (if one can be located) can allow doctors to identify the stage, and often results in a cure.

Stage 0 or Carcinoma in Situ

Stage 0 or carcinoma in situ (Tis, N0, M0) are noninvasive cancers. Only a few layers of cancer cells are detected within one local...

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Digestive system

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