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Colon Cancer Treatment (PDQ®)

  • Updated: 02/08/2013

Table 3. Definitions of TNM Stage II

Stage TNMa,b Dukesc MACd Description Illustration  
IIAT3, N0, M0BB2T3 = Tumor invades through the muscularis propria into pericolorectal tissues.
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.
IIBT4a, N0, M0BB2T4a = Tumor penetrates to the surface of the visceral peritoneum.f
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.
IICT4b, N0, M0BB3T4b = Tumor directly invades or is adherent to other organs or structures.f,g
N0 = No regional lymph node metastasis.
M0 = No distant metastasis.

T = primary tumor; N = regional lymph nodes; M = distant metastasis.
Reprinted with permission from AJCC: Colon and rectum. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 143-164.
The explanations for superscripts a–g are at the end of Table 5.