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Published in: Breast Cancer Research 1/2021

01-12-2021 | Breast Cancer | Research article

Sole adjuvant intraoperative breast radiotherapy in Taiwan: a single-center experience

Authors: Hsin-Yi Yang, Chi-Wen Tu, Chien-Chin Chen, Cheng-Yen Lee, Yu-Chen Hsu

Published in: Breast Cancer Research | Issue 1/2021

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Abstract

Introduction

Intraoperative radiotherapy (IORT) is more convenient than standard whole breast external beam radiotherapy (EBRT) as a sole adjuvant radiotherapy for breast cancer. The impact of age on breast cancer course and treatment strategy is still under investigation, and the peak age for breast cancer in Taiwan is much younger than that in Western countries. We aimed to review the oncological outcomes of sole IORT compared with standard EBRT in a country with younger breast cancer patients.

Patients and methods

We reviewed patients with invasive breast cancer who received breast-conserving surgery (BCS) from September 2014 to December 2016. The clinicopathologic characteristics and oncological outcomes of eligible patients who received EBRT or IORT as sole adjuvant radiotherapy after BCS were collected and reviewed.

Results

A total of 170 patients were enrolled with a mean follow-up time of 3.53 ± 0.82 years. The risk of locoregional recurrence was 2.44% for EBRT versus 10.64% for IORT (p = 0.024). IORT was a significant risk factor of locoregional recurrence (p = 0.005). The hazard ratios (HRs) for locoregional recurrence in the IORT group compared with the EBRT group were significantly higher in non-suitable risk group patients (HR = 7.02, p = 0.009) and in patients under 50 years old (HR = 10.42, p = 0.011).

Conclusions

Locoregional recurrence was significantly higher in patients who received IORT than in those who underwent EBRT. IORT should not be used alone in patients under 50 years old who do not belong to a suitable group.
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Metadata
Title
Sole adjuvant intraoperative breast radiotherapy in Taiwan: a single-center experience
Authors
Hsin-Yi Yang
Chi-Wen Tu
Chien-Chin Chen
Cheng-Yen Lee
Yu-Chen Hsu
Publication date
01-12-2021
Publisher
BioMed Central
Published in
Breast Cancer Research / Issue 1/2021
Electronic ISSN: 1465-542X
DOI
https://doi.org/10.1186/s13058-021-01421-y

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