Comparison of brachytherapy and external beam radiotherapy boost in breast-conserving therapy: Patient-reported outcome measures and aesthetic outcome.

Strahlentherapie und Onkologie : Organ der Deutschen Röntgengesellschaft ... [et al]
Isabelle KindtsCaroline Weltens

Abstract

This study aimed to estimate the probability of an unfavourable aesthetic outcome (AO) 2 years after breast-conserving therapy (BCT) and evaluate the possible influence of brachytherapy (BT) and external beam radiotherapy (EBRT) boost on patient-reported outcomes (PROs) and AO. Patients treated with BCT starting April 2015 were prospectively included. Selection of the boost technique followed an in-house flowchart based on the depth of the tumour bed. An electron boost was performed for a superficial clinical target volume (maximum 28 mm under the epidermis), a BT boost was proposed in all other cases. Patients were followed-up for 2 years. AO was scored by the BCCT.core software and the patient. Further PROs were measured with the EORTC QLQ-C30, QOL-BR23 and the BIBCQ questionnaires. The analysis included 175 patients, 80 received a BT boost and 95 an EBRT boost. BT patients were significantly older; had a higher breast cup and band size, body mass index and surgical specimen weight of the wide excision; more seroma at baseline and less positive surgical section margins than patients in the EBRT group, and more patients drank alcohol. Cancer- and breast cancer-specific quality of life (QOL) and body image did not differ betwee...Continue Reading

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