Basic Treatment Planning

N Stage (apart from nasopharynx)

Nx

nodes not evaluable

Nasopharynx



N0

nodes not clinically involved

N1

single LN < 6cm above SCF

N1

single ipsilateral node ≤ 3cm

N2

bilateral nodes

N2a

single ipsilateral node ≤ 6cm

N2b

multiple ipsilateral nodes ≤ 6cm

N2c

bilateral or contralateral node(s) ≤ 6cm

N3

>6 cm or SCF

N3

any node >6cm