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Current status of elective neck irradiation
• IMRT
•
PTV1: node level/s, where N+ (high-risk PTV); dose 50-66 Gy.
•
PTV2: node levels, where N0 (low-risk PTV); dose ~50 Gy.
• Regional recurrence
•
Isolated in the “elective” neck <5%.
• Toxicity
•
Xerostomia Grade 3 ≤3%, no Grade 4.
•
Parotid glands (spared)
•
Submandibular glands (usually not spared)
•
Sublingual glands and oral cavity (usually not spared)
•
Late swallowing disturbances up to 50%.
Duprez et al.
IJROBP
2011; 79:450-8.
Wang, Eisbruch.
J Radiat Res
2016; 57 Suppl 1:i69-i75.
Nguyen et al.
Eur J Radiol
2006;59:453-9.