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Table 3 Selection of selective nodal clinical target volume (CTV)

From: Selective use of postoperative neck radiotherapy in oral cavity and oropharynx cancer: a prospective clinical study

 

Nodal CTV0

Nodal CTV1

Nodal CTV2

Subclinical disease risk

<10%

10%-25%

>25%

Prescribed radiation dose

<35 Gy (a)

50 Gy

66-70 Gy

Levels dissected

Negative level with sufficient dissection

Negative and/or positive level without risk factors with insufficient dissection

Positive level with risk factors

Positive level without risk factors

Adjacent negative level to nodal CTV2 (ECS and/or pN3)

Levels not dissected

-

Ipsilateral: Non-dissected level adjacent to infiltrated dissected level

-

 

-

Contralateral: Levels with risk factors

-

  1. (a) Referred to mean dose < 35 Gy.
  2. Abbreviations: ECS = Extracapsular spread; pN = pathological nodal stage.