

• New node levels:
VIIa
(lateral retropharyngeal),
VIIb
(retro-styloid),
VIII
(parotid),
IX
(bucco-facial),
Xa
(mastoid) &
Xb
(occipital).
• New node sublevels: IV
a-b
, V
a-c
, VI
a-b
.
• No medial retropharyngeal lymph nodes.
Gregoire
et al.
Radiother Oncol
2014;110:172-81.
How do we define the CTV of elective neck? N ≥0
The CTV of elective neck: 2013 update