TNM staging42
| T1 | Tumour limited to one subsite and 20 mm or less in greatest dimension |
| T2 | Tumour involves more than one subsite or measures 21–40 mm in size |
| T3 | Tumour >40 mm in size or with fixation of hemilarynx |
| T4 | Tumour invades adjacent structures |
| pNX | Nodes cannot be assessed |
| pN0 | No nodal metastasis |
| pN1 | Metastasis in single ipsilateral node 30 mm or less in diameter |
| pN2 | Metastasis in single ipsilateral node 31–60 mm diameter, or metastasis in multiple ipsilateral, bilateral, or contralateral nodes <61 mm diameter |
| pN3 | Metastasis in lymph node more than 60 mm diameter |