Table 16 Guidelines for contouring neck levels (positive on imaging)
Laryngeal Site | TN stage | Levels to be included in CTV 2 | Levels to be included in CTV 3 | Remarks |
|---|---|---|---|---|
Supraglottic | T1-2- N+ | II-III (bil) | IV bilat, V (on the side of positive neck) | Â |
Glottis | T2Â N+ | II-III (bil) | IV bilat, V (on the side of positive neck) | Â |
Subglottic | T1-2Â N+ | III-IV (bil) | V (on the side of positive neck), | Â |
VII | ||||
Glottis/ | T3-4Â N+ | II-IV (bil) | IIb if IIa positive, VI, | Â |
Supraglottic/ | V (on the side of positive neck), | |||
Subglottic | IB only on the side level II is pos*, | |||
VII only if subGL ext | ||||
RP only if ext to pharynx |