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Title
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Long-term cosmetic changes after breast-conserving treatment of patients with stage I-II breast cancer and included in the EORTC 'boost versus no boost' trial
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Author
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Abstract
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| In breast cancer treated with breast-conserving radiotherapy, the influence of the boost dose on cosmetic outcome after long-term follow-up is unknown. We included 348 patients participating in the EORTC 'boost versus no boost' mega trial with a minimum follow-up of 6 years. Digitalised pictures were analysed using specific software, enabling quantification of seven relative asymmetry features associated with different aspects of fibrosis. After 3 years, we noted a statistically significantly poorer outcome for the boost patients for six features compared with those of the no boost patients. Up to 9 years of follow-up, results continued to worsen in the same magnitude for the both patient groups. We noted the following determinants for poorer outcome: (i) boost treatment, (ii) larger excision volumes, (iii) younger age, (iv) tumours located in the central lower quadrants of the breast and (v) a boost dose administered with photons. A boost dose worsens the change in breast appearance in the first 3 years. Moreover, the development of fibrosis associated with whole-breast irradiation, as estimated with the relative asymmetry features, is an ongoing process until (at least) 9 years after irradiation. |
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Language
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English
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Source (journal)
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Annals of oncology / European Society for Medical Oncology. - Amsterdam
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Publication
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Amsterdam
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2012
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ISSN
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0923-7534
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DOI
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10.1093/ANNONC/MDS066
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Volume/pages
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23
:10
(2012)
, p. 2591-2598
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ISI
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000309412700014
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Pubmed ID
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22499858
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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