Chapter 084. Head and Neck Cancer (Part 3) pptx

Chapter 084. Head and Neck Cancer
(Part 3)
Table 84-
1 TNM Classification for Head and Neck Cancer (Except
Nasopharyngeal)

Primary Tumor Site
T
Grade
Oropharynx Hypopharynx
T1 0–2 cm 0–2 cm
T2 2.1–4 cm >1 site, 2–4 cm
T3 >4 cm >4 cm
T4a Lary
nx, muscle of tongue,
Thyroid/cricoid cartilage,
medial pterygoid, hard palate,
mandible invasion
hyoid bone, thyroid gland,
esophagus, or central
compartment soft tissue invasion
T4b
Lateral pterygoid muscle,
pterygoid plates, lateral
nasopharynx, or sku
ll base or
encases carotid artery invasion
Invasion of prevertebral
fascia, encases carotid artery, or
involves mediastinal structures
Regional Lymph Nodes (N)

NX Regional lymph nodes cannot be assessed
N0 No regional lymph node metastasis
N1 Unilateral metastasis in lymph node(s),
≤6 cm in greatest
dimension, above the supraclavicular fossa
N2 Bilateral metastasis in lymph node(s),
≤6 cm in greatest
dimension, above the supraclavicular fossa
N3
Metastasis in a lymph node(s) >6 cm and/or to
supraclavicular fossa
N3a > 6 cm
N3b Extension to the supraclavicular fossa
MX Distant metastasis cannot be assessed
M0 No distant metastasis
M1 Distant metastasis
Stage Grouping
Stage
0
Tis N0 M0
Stage
I
T1 N0 M0
Stage
II
T2 N0 M0
Stage
III
T3 N0 M0
T1 N1 M0

T2 N1 M0
T3 N1 M0
Stage
IVA
T4a N0 M0
T4a N1 M0
T1 N2 M0
T2 N2 M0
T3 N2 M0
T4a N2 M0
Stage
IVB
T4b Any N M0
Any T N3 M0
Stage
IVC
Any T Any N M1