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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 0mm (previously 5mm in the 2017 guidelines). What do you do in your practice?

 

linkinghub.elsevier.com/retrieve/pii/S1470-2045(25)00326-2