N2: Contralateral or bilateral lymph nodes involved
N3: Fixed mass of regional lymph nodes
N4: Juxtaregional lymph node involvement
NX: Unable to assess lymph node involvement
VI. Staging: Distant Metastatic Spread Staging: M
MO: No distant metastasis identified
M1: Distant metastasis found
MX: Unable to assess metastases
Edge (2010) AJCC Cancer Staging Manual, 7th ed, New York
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This page was written by Scott Moses, MD, last revised on 10/15/2017 and last published on 8/3/2018.