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:
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.
Nx
N1
N2
N3