Patient with head and neck cancer with contralateral Lymphnode of 3 cm size. Nstaging
N0
No nodal metastasis
 
 


N1
Single
Ipsilateral
Equal to or <3 cm


N2a
Single
Ipsilateral
3 to 6 cm


N2b
Multiple
Ipsilateral
None > 6 cm


N2c
Single or Multiple
Bilateral or Contralateral
None > 6 cm


N3
Single or Multiple
Ipsilateral, Bilateral or Contralateral
Any node >6 cm
N2a
N2b
N2c
N3