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Trend: de-intensification of elective neck irradiation
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Target volume reduction:
1. Omitting medial retropharyngeal lymph nodes.
2. Omitting contralateral retropharyngeal lymph nodes and contralateral high
node level II.
3. Omitting elective neck irradiation contralaterally.
4. Omitting elective neck irradiation after induction chemotherapy.
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Dose de-escalation
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Target volume reduction & dose de-escalation