Oncological results of salvage treatment in patients with oropharynx carcinoma treated with radiotherapy

Abstract

ObjectiveTo evaluate the possibilities of salvage after local recurrence in patients with oropharyngeal carcinomas treated with radiotherapy, and to analyse the prognostic factors related to the final control of the disease. MethodsRetrospective study of 596 patients with oropharyngeal carcinoma treated with radiotherapy during the period 1991–2018. ResultsOne hundred and eighty-one patients (30.4%) had a local recurrence. Of the patients with a local recurrence, 51 (28.2%) were treated with salvage surgery. Variables that were associated with the patient not receiving salvage surgery were age greater than 75 years, tumour location in the posterior hypopharyngeal wall, an initial tumour extent cT4, and a recurrence-free interval of less than 6 months. Five-year specific survival of patients treated with salvage surgery was 19.1% (95% CI: 7.3%–30.9%). Variables that were related to specific survival were extent of recurrence and status of resection margins. Final tumour control was not achieved in any of the patients with extensive recurrence (rpT3−4, n = 25) or positive resection margins (n = 22). ConclusionPatients with oropharyngeal carcinomas treated with radiotherapy with local tumour recurrence have a limited prognosis. Most patients (71.8%) were not considered candidates for salvage surgery. The 5-year specific survival of patients treated with salvage surgery was 19.1%.