Intensity-modulated radiation therapy with simultaneous integrated boost for locally advanced breast cancer: a prospective study on toxicity and quality of life

Radiotherapy after breast conserving surgery and mastectomy with node positive disease has been shown to reduce risk of recurrence and mortality in the treatment of breast cancer. Intensity-modulated radiation therapy (IMRT) after conservative surgery offers several advantages over conventional RT i...

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Bibliographic Details
Published in:Scientific reports 2019-02, Vol.9 (1), p.2759-2759, Article 2759
Main Authors: Pasquier, David, Le Tinier, Florence, Bennadji, Raoudha, Jouin, Anais, Horn, Samy, Escande, Alexandre, Tresch, Emmanuelle, Chauvet, Marie Pierre, Mailliez, Audrey, Crop, Frederik, Mirabel, Xavier, Lartigau, Eric
Format: Article
Language:English
Subjects:
692/308
692/4028/67/1347
Acute toxicity
Breast cancer
Breast surgery
Cancer therapies
Esophagus
Fibrosis
Humanities and Social Sciences
Lymph nodes
multidisciplinary
Patients
Quality of life
Radiation therapy
Science
Science (multidisciplinary)
Surgery
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Summary:Radiotherapy after breast conserving surgery and mastectomy with node positive disease has been shown to reduce risk of recurrence and mortality in the treatment of breast cancer. Intensity-modulated radiation therapy (IMRT) after conservative surgery offers several advantages over conventional RT including improved acute and late toxicity and quality of life (QoL). We undertook this study to prospectively evaluate acute (≤90 days after last dose of radiotherapy) and long-term (>90 days) cutaneous, esophageal, and fibrosis toxicity and QoL in breast cancer patients treated by adjuvant IMRT after breast surgery. We included patients with complex volumes for which 3D RT does not allow a good coverage of target volumes and sparing organs at risk. We report here an interim analysis with a median follow-up of 13.1 months (range, 6.5–25.9 months). Most of the acute toxicity was cutaneous (95.9%) and oesophageal (59.6%), and mostly grade 1 and 2. Medium-term cutaneous toxicity rate was 25.6%, and mostly grade 1. Medium-term esophageal toxicity was rare (1.8%). In this series acute oesophageal toxicity was found to be associated with dosimetric factors. QoL was well preserved throughout the study, and aesthetic outcomes were good. Based on these data, tomotherapy may be a favorable alternative to other techniques in patients needing a complex irradiation of the breast and lymph node volumes.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-019-39469-8