ESTRO 2025 - Abstract Book

S1013

Clinical – Head & neck

ESTRO 2025

Conclusion: F-18 FDG PET-CT may have a role to play in the work-up and management plan for patients with salivary gland malignancies regardless of stage at diagnosis and may have some utility in intermediate to high grade tumours. This may avoid patients being treated with futile treatment, whilst also identifying patients who may benefit from escalation in radical treatment. This should be investigated in a prospective setting to address the inherent bias from retrospective data.

Keywords: Salivary gland malignancy, FDG PET-CT, staging

2100

Digital Poster Olfactory function in nasopharyngeal carcinoma patients after radiotherapy: a preliminary report of a prospective cohort study. Kansiree Benjangkhaprasert 1 , Prem Wungcharoen 2 , Jesada Kanjanaumporn 2 , Supinda Chusakul 2 , Anussara Prayongrat 1 , Danita Kannarunimit 1 , Chakkapong Chakkabat 1 , Chawalit Lertbutsayanukul 1 , Sarin Kitpanit 1 1 Division of Radiation Oncology, Department of Radiology, Her Royal Highness Princess Maha Chakri Sirindhorn Proton Center (HPSP), King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand. 2 Department of Otolaryngology, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand Purpose/Objective: To evaluate changes in olfactory function in nasopharyngeal carcinoma (NPC) patients who received definitive radiation (RT)/chemoradiation (CRT) + induction chemotherapy (IC), their associations with patient-reported outcomes, quality of life (QoL), rhino sinusitis incidence, and correlations between olfactory dysfunction and radiation dose-volume parameters in olfactory-related regions.