Template:Radiation Oncology/Head & Neck/Node staging-7thEd

NX - Cannot be assessed
N0 - No regional lymph nodes metastasis
N1 - Single ipsilateral lymph node, <= 3cm in greatest dimension
N2
- N2a - Single ipsilateral lymph node, 3-6 cm in greatest dimension
- N2b - Multiple ipsilateral lymph nodes, <= 6cm in greatest dimension
- N2c - Bilateral or contralateral lymph nodes, <= 6cm in greatest dimension
N3 - Lymph node(s) >6 cm in greatest dimension