Javascript er ikke aktivert i din nettleser. Dette er nødvendig for å bruke Oncolex. Kontakt din systemadministrator for å aktivere JavaScript.

Staging of pharynx cancer

Epithelial tumors are classified according to the International Union Against Cancer (UICC) (3,4).

T classification

The T classification represents the extent of the primary tumor.

  • T1 – small tumors ≤ 2 cm in largest diameter
  • T2 – tumor 2–4 cm in largest diameter


  • T3–4 – Advanced tumors with invasion of neighboring organs, soft tissue, bony structures or skin (2).


Tumors of the nasopharynx have a unique T classification.

  • T1 – Small tumors confined to nasopharynx
  • T2a – Tumor extends to soft tissue of oropharynx and/or nasal cavity without parapharyngeal extension
  • T2b – Tumor extends to soft tissue of oropharynx and/or nasal cavity with parapharyngeal extension
  • T3 – Tumor invades bony structures and/or paranasal sinuses
  • T4 – Tumor with intracranial extension and/or involvement of cranial nerves, infratemporal fossa, hypopharynx, orbit, or masticator space.

N classification

The N classification represents metastasis to regional lymph nodes in the neck. The greatest diameter is measured.

  • N0 – no regional lymph node metastases
  • N1 – single ipsilateral lymph node metastasis ≤ 3 cm
  • N2
    • a – single ipsilateral lymph node metastasis > 3 cm ≤ 6 cm
    • b – multiple ipsilateral lymph node metastases ≤ 6 cm
    • c – bilateral or contralateral lymph node metastases ≤ 6 cm
  • N3 – lymph node metastases > 6 cm

M classification

The M classification represents distant metastases.

  • M0 – no distance metastases
  • M1 – distant metastases

Oslo University Hospital shall not be liable for any loss whether direct, indirect, incidental or consequential, arising out of access to, use of, or reliance upon any of the content on this website. Oslo University Hospital© 2017