ESTRO 2024 - Abstract Book

S2961

Interdiscplinary - Other

ESTRO 2024

Twenty-six patients with HO and 156 THA patients without HO (control group) were included. Patients with HO had a lower burden of comorbidities, lower BMI and lower ASA scores than controls. Out of 26 patients with HO, 10 (38.5%) underwent radiotherapy prophylaxis, administered as a single dose 24 hours before surgery. The total dose of 7 Gy was administered as single fraction on the volume defined by the extension of the prosthesis. Only one patient who underwent radiotherapy had a recurrence while new ossifications were found in 3 patients without prophylaxis (11.5%). Logistic regression analysis showed a significant inverse association between the presence of HO and ASA scores. Surgical approaches and radiographic classifications improved after surgery. Radiotherapy prophylaxis and pharmacological treatment showed positive results. Complications were recorded, including local and systemic complications, but overall, patients reported physical improvement following surgery.

Conclusion:

Surgical removal of HO in symptomatic patients with high-grade disease resulted in good clinical and radiographic outcomes. Radiotherapy was an effective perioperative and preventive strategy for recurrence of HO, also associated with NSAIDs and COX-2 inhibitors. However, additional large-scale studies are needed to validate and further establish these findings.

Keywords: Radiotherapy, Heterotopic ossification

2655

Digital Poster

Qualitative exploration of head & neck cancer patient reported experience of mask anxiety

Daisy Hopper 1 , Grant Punnett 2 , Anita Mehrez 1 , James Price 3,4 , Janelle Yorke 1,5 , Jacqui Stringer 1,4

1 The Christie NHS Trust, Complementary Health & Wellbeing, Manchester, United Kingdom. 2 The Christie NHS Trust, Christie Patient Centred Research, Manchester, United Kingdom. 3 The Christie NHS Trust, Clinical oncology, Manchester, United Kingdom. 4 University of Manchester, Division of Cancer Sciences, Manchester, United Kingdom. 5 University of Manchester, School of health Sciences, Manchester, United Kingdom

Purpose/Objective:

Patients with head and neck cancer (HNC) who undergo radiotherapy can experience high rates of anxiety compared to those with other cancers, with up to 26% of patients with HNC reporting moderate to severe distress (Nixon et al, 2018). Radiotherapy immobilisation masks are tight-fitting, cover the face and shoulders and are bolted to the radiotherapy couch. The use of the immobilisation mask whilst critical for treatment, can be very challenging for patients with anxiety or feelings of claustrophobia (Nixon et al, 2018). Although it is recognised that mask-related anxiety and distress can impact patient’s treatment decisions and cause disruptions to treatment (Keast et al, 2018), there remains a paucity of research into patients’ experience and strategies to manage mask-related anxiety. The aim of this study was to: (1) explore patients’ experience of preparing for and completing radiotherapy utilising an immobilisation mask, (2) identify themes related to ‘claustrophobia’ and mask-related anxiety, with a view to developing items for a short screening questionnaire.