Target Volume Determination 2015

How do we define the CTV of elective neck? cN0

Selecting the lymph node level for the CTV of N0-1 neck

Tumor site

Level I Level II Level III Level IV Level V Retropharyngeal

Oral cavity

-

-

+

+

+

+ a

Oropharynx

-

+

+

+

-

+ b

Hypopharynx c

-

+

+

+

-

-

Larynx d

-

+

+

+

-

-

Nasopharynx

-

+

+

+

+

+

a For tumors of the anterior tongue. b For tumors of the posterior pharyngeal wall. c Level VI for for esophageal extension. d Level VI for transglottic and subglottic tumors.

Gregoire et al. Radiother Oncol 2000; 56:135-50.