You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is A patient with oral cancer, had ipsilateral lymph node measuring 2 cm, single in number with capsular spread. According to TNM staging it is included under: and explain in detail?
Nx: Nodal status can't be assessed.
No: No lymph nodes.
N1: Single ipsilateral lymph node <3 cm
N2:
A: Single ipsilater lymph 3.6 cm
B: Multiple ipsilater lymph <6 cm
C: Bilateral or contralateral lymph nodes <6 cm.
N3:
Any lymph node with >6 cm, or
Any lymph node with capsular invasion.