Target Volume Determination 2015

Do we need to treat the neck electively?

Incidence of cN0 disease in head-and-neck cancer

N0 > N+ with no neck treatment

cN0 but pN+ 19-54%

Tumor site

cN0

Oral cavity Oropharynx Hypopharynx

35-70% 17-63% 28-48% 46-69% 10-14%

17-52% 16-25% No data

22% 38%

Larynx: supraglottis

16-26% No data

33%

Nasopharynx

19-50%

Larynx: T1-T2 glottis > 90% Sinonasal > 90%

Mendenhall et al. Head Neck Surg 1980; 3:15-20.