Staging - Nasopharynx

Question 1

T0

Answer 1

No tumor identified, but EBV + cervical node

Question 2

Carcinoma in situ

Answer 2

Tis

Question 3

T1

Answer 3

Confined to nasopharynx or extends to oropharynx and/or nasal cavity w/o parapharyngeal involvement

Question 4

T2

Answer 4

Extends to parapharyngeal space and/or adjacent soft tissue (eg. medial/lateral pterygoid, prevertebral muscles)

Question 5

T3

Answer 5

Infiltrates bony structures of skull base, cervical vertebra, pterygoid structures, and/or paranasal sinuses

Question 6

T4

Answer 6

Intracranial extension, involvement of cranial nerves, hypopharynx, orbit, and parotid gland/or soft tissue involvement beyond the lateral surface of lateral pterygoid

Question 7

N1

Answer 7

unilateral cervical lymph node, or unilateral/bilateral retropharyngeal node(s), < 6 cm in greatest dimension and above the caudal border of the cricoid cartilage

Question 8

N2

Answer 8

bilateral cervical lymph nodes, < 6 cm in greatest dimension and above the caudal border of the cricoid cartilage

Question 9

N3

Answer 9

unilateral or bilateral cervical lymph nodes, larger than 6 cm in the greatest dimension and above the caudal border of the cricoid cartilage