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Nasopharyngeal Cancer Treatment (PDQ®)

  • Updated: 07/31/2014

Table 1. Primary Tumor (T)a

TXPrimary tumor cannot be assessed.
T0No evidence of primary tumor.
TisCarcinoma in situ.
T1Tumor confined to the nasopharynx, or tumor extends to oropharynx and/or nasal cavity without parapharyngeal extension.b
T2Tumor with parapharyngeal extension.b
T3Tumor involves bony structures of skull base and/or paranasal sinuses.
T4Tumor with intracranial extension and/or involvement of cranial nerves, hypopharynx, orbit, or with extension to the infratemporal fossa/masticator space.

aReprinted with permission from AJCC: Pharynx. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 41-56.
bParapharyngeal extension denotes posterolateral infiltration of tumor.