ESTRO 2025 - Abstract Book

S1056

Clinical – Head & neck

ESTRO 2025

Keywords: oligometastases, SABR, head and neck

3018

Digital Poster Identifying modifiable patient and treatment characteristics in long-term PEG-dependent head and neck cancer patients Saeed Salman 1,2 , Nancy Heppell 1 , Acheem Joseph 1 , Christina Tsien 1 , George Shenouda 1 1 Radiation Oncology Division, McGill University Health Center, Monteal, Canada. 2 Radiation Oncology, RAMBAM health care campus, Haifa, Israel Purpose/Objective: This study aims to identify patient and treatment-related modifiable characteristics to mitigate the risk of long-term dependence on percutaneous endoscopic gastrostomy (PEG) after chemoradiation in head and neck cancer (HNC) patients. Material/Methods: A retrospective analysis was conducted on patients with HNC treated at McGill University Health Center. Patients were divided based on the median duration of PEG tube use (3.3 months). Logistic regression identified factors linked to prolonged PEG tube dependence. Results: In a study of 213 patients treated with concurrent chemoradiation who received prophylactic PEG prior to radiation therapy, the median age was 64 years (range: 34-87). 77.5% were male and 75.5% had a history of smoking; of these, 24.6% continued smoking. All patients received a dose of 70 Gy or its biologically equivalent for gross disease.