What GTV to CTV expansion do you utilize for NPC?
The 2025 multigroup consensus guidelines for target delineation of NPC recommend GTVp to CTVp expansion of 0 mm (previously 5 mm in the 2017 guidelines). What do you do in your practice?
Tang et al., PMID 40907526
1 Answer
Mednet Member
Radiation Oncology · Michigan Healthcare Professionals, PC
Answered on
Many have moved in that direction. I believe MSKCC has been doing this for years for HNC.
I believe with good imaging/fusion (including MRI), doing direct GTV to PTV (3-5 mm expansion, dependent on imaging protocol) is reasonable and likely less toxic. I do this for most head and neck patients if th...
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