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Merkel Cell Carcinoma Treatment (PDQ®)

  • Updated: 03/07/2014

Table 5. Distant Metastasis (M)a

aReprinted with permission from AJCC: Merkel cell carcinoma. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 315-23.
M0No distant metastasis.
M1Metastases beyond regional lymph nodes.
M1aMetastases to skin, subcutaneous tissues, or distant lymph nodes.
M1bMetastasis to lung.
M1cMetastases to all other visceral sites.