Symptom burden associated with radiation dermatitis in breast cancer patients undergoing radiotherapy

Abstract Purpose: Radiation dermatitis (RD) is a side effect experienced by many patients undergoing radiotherapy (RT) for breast cancer. In the present study, the Edmonton Symptom Assessment System (ESAS), a validated patient-reported symptom screening tool, was used to determine the impacts of RT-induced skin outcomes on ESAS items. Patient- and treatment-related factors and skin treatments to manage RD symptoms, were assessed for association with ESAS scores. Methods: Patient and treatment characteristics were collected retrospectively for breast cancer patients treated with adjuvant RT between December 2013 and November 2015. Prospective data was collected through clinician-reported surveys. Linear regression analyses were performed to detect the relationship between patient-reported ESAS scores and clinician-reported RD symptoms. Results: A total of 857 patients were included in the analysis. Moderate to severe scores were commonly reported for fatigue (n=412, 48%), wellbeing (n=386, 45%) and anxiety (n=266, 31%). Oral analgesic use was associated with ESAS fatigue, drowsiness, pain, nausea, lack of appetite, shortness of breath, and wellbeing (p Conclusions: The ESAS accurately reflects symptoms of fatigue, anxiety, and wellbeing for breast cancer patients undergoing RT. Our study, however, found no association between ESAS scores and RD severity, which may reflect the shortcomings of the ESAS in assessing symptom burden. Further research is necessary to warrant the development of a new site-specific symptom screening tool for use in RT for breast cancer. Micro Abstract: The Edmonton Symptom Assessment System (ESAS) is a routinely used patient-reported symptom scoring tool. In our patient population, ESAS fatigue, anxiety, and wellbeing were accurately captured. However, ESAS items showed no correlation with radiation dermatitis (RD) severity, despite the high prevalence of RD. As such, the development of a new patient-reported tool is warranted to adequately assess burden of RD.