Purpose: Specific information about radiation therapy in nonagenarians is limited. In order to shed more light on the feasibility of radiotherapy in this challenging subgroup, a retrospective study was performed.
Methods: The data of 93 consecutive patients receiving irradiation treatment at the Department of Radiation Oncology, Ordensklinikum Linz Barmherzige Schwestern between June 2005 and December 2016 were analyzed. Patient- and treatment-related factors were extracted from the patient records. Overall survival (OS) was defined as time from irradiation to death or last follow-up. The survival rates were analyzed using the Kaplan-Meier method and log-rank test.
Results: The study population of 93 patients was between 90 and 99 years old (median 91 years). It included 59 women (63%) and 34 men (37%). Of these, 38 (41%) received definitive radiotherapy, 14 (15%) received neoadjuvant or adjuvant radiotherapy, whereas a palliative regimen was prescribed in 44% of the cases (n = 41). In all, 79 patients (85%) were able to complete their prescribed course of radiotherapy. While 16 (17%) patients reported grade 2 toxicities or higher, 4 had ≥grade 3 side effects (4%). The median survival was significantly higher in patients treated with adjuvant, neoadjuvant or definitive radiotherapy (13.8 months) compared to patients treated with palliative radiotherapy (3.6 months; p < 0.001).
Conclusion: Even in patients managed without preradiotherapy comprehensive geriatric assessment, carefully planned fractionated radiotherapy was feasible and resulted in acceptable rates of acute toxicities.
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