Clinical Outcomes of Patients Treated with Short-course Palliative Radiotherapy in the First Year of the COVID-19 Pandemic: A Single Institution Experience

Objective. This study aimed to describe the clinical profile and treatment outcomes of patients treated with a short course (<10 fractions) of palliative radiotherapy during the first year of the COVID-19 pandemic. Another aim of the study is to compare patients treated with short-course and long-course palliative radiotherapy in terms of the site and volume irradiated.

Methods. An ambispective study comprised 23 patients treated with short-course palliative radiotherapy from March 2020 to February 2021. The retrospective aspect of this study included a review of medical records and radiotherapy plans, while the prospective part involved communication with patients or legally authorized representatives via phone call. Demographic, clinical, and treatment-related information were gathered.

Results. Of 92 patients receiving palliative radiotherapy, 23 were treated with a short course, while 69 were planned for at least ten fractions. Of the 23 patients receiving short-course radiotherapy, most had colorectal (35%) and head and neck (26%) primary malignancies. The most commonly treated sites were the pelvis (24%), vertebral bones (21%), and head and neck masses (21%), and the most common indications were pain (45%) and bleeding (32%). The majority were treated with 20 Gy in 5 fractions (42%) and 25 Gy in 5 fractions (38%). Complete resolution of symptoms was observed in 43% of cases, and more than half reported no side effects (58%). Median survival was 71 days. All patients treated in the lung, stomach, and brain underwent a long course of palliative radiotherapy. Patients with a long course also had higher mean irradiated volumes (1871 cm3 vs. 2150 cm3).

Conclusion. In this single institution review, a short course of palliative radiotherapy was proven to provide good symptom control with few side effects. During the COVID-19 pandemic, its use should be strongly considered, especially in patients with poor performance status, transportation difficulties, and limited life expectancy.