523 / 1311
Risks of cN0 disease
Tumor site
cN0
cN0
,
pN+
N0 > N+
with
no neck
treatment
Oral cavity
35-70%
19-54%
17-52%
Oropharynx
17-63%
22%
16-25%
Hypopharynx
28-48%
38%
No data
Larynx:
supraglottis
46-69%
16-26%
33%
Nasopharynx
10-14%
No data
19-50%
Mendenhall
et al.
Head Neck Surg
1980; 3:15-20.
#1
: risk of occult
metastases
#2
: risk of
regional failure
ELECTIVE NECK IRRADIATION
Do we need to treat the neck electively?