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