What are the TNM system metastasis classifications in rectal cancer?

Updated: Apr 06, 2021
  • Author: Burt Cagir, MD, FACS; Chief Editor: N Joseph Espat, MD, MS, FACS  more...
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Distant metastasis (M) include the following:

  • MX - Presence of metastasis cannot be assessed
  • M0 - No distant metastasis
  • M1 - Distant metastasis

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