Which statement describes N2 in TNM staging?

Which statement describes N2 in TNM staging?

• A. Metastasis in 4-9 regional lymph nodes.
• B. Metastasis in 1-3 regional lymph nodes.
• C. No regional lymph node involvement.
• D. Distant metastasis to distant organs.

Answer: (A)

Regional lymph node involvement is what N measures in TNM staging. N2 specifically refers to cancer spread to four to nine regional lymph nodes. That’s why the statement describing metastasis in four to nine regional lymph nodes is correct. Metastasis in one to three regional lymph nodes corresponds to N1, no regional lymph node involvement is N0, and distant metastasis to distant organs describes the M category, not N.

Regional lymph node involvement is what N measures in TNM staging. N2 specifically refers to cancer spread to four to nine regional lymph nodes. That’s why the statement describing metastasis in four to nine regional lymph nodes is correct. Metastasis in one to three regional lymph nodes corresponds to N1, no regional lymph node involvement is N0, and distant metastasis to distant organs describes the M category, not N.