Abstract
Background
We carried out the first multi-institutional prospective study on accelerated partial breast irradiation (APBI) via multicatheter interstitial brachytherapy in a shorter period for early breast cancer in Japan.
Methods
Patient eligibility criteria included positive hormone receptors, tumors ≤ 3 cm and TNM stage pN0M0. After breast-conserving surgery (Japanese cylindrical resection) and histological confirmation of negative surgical margins and the absence of lymph node metastasis, applicator implantation was performed either postoperatively or intraoperatively. High-dose-rate brachytherapy of 36 Gy in 6 fractions was delivered.
Results
Forty-six patients from six institutions received this treatment regimen, and the median follow-up time was 60 months (range 57–67 months). The median resected breast tissue volume was 81 cm3 (range 28–260 cm3). No Grade 4 late sequela, local recurrence nor death due to breast cancer were observed. Grade 2–3 sequelae such as rib fracture (2%), soft tissue necrosis (9%), fibrosis (20%), and breast pain (9%) were observed. The resected breast tissue volumes of the patients who had Grade ≥ 2 fibrosis and Grade < 2 fibrosis were 105.9 ± 32.3 cm3 and 76.3 ± 45.6 cm3, respectively, p = 0.02.
The overall cosmetic outcome score of Excellent/Good was 74% at 60 months after APBI. Grade ≥ 1 fibrosis was observed in 44% and 92% of patients who scored Excellent/Good and Fair/Poor, respectively, p = 0.004.
Conclusions
This study showed excellent local control and survival results with minimal late sequelae.
Similar content being viewed by others
References
Fisher B, Anderson S, Bryant J, et al. Twenty-year follow-up of a randomized trial comparing total mastectomy, lumpectomy, and lumpectomy plus irradiation for the treatment of invasive breast cancer. N Engl J Med. 2002;347:1233–41.
Early Breast Cancer Trialists’ Collaborative Group. Favourable and unfavourable effects on long-term survival of radiotherapy for early breast cancer: an overview of the randomised trials. Lancet. 2000;355:1757–70.
Whelan T, MacKenzie R, Julian J, et al. Randomized trial of breast irradiation schedules after lumpectomy for women with lymph node-negative breast cancer. J Natl Cancer Inst. 2002;94:1143–50.
Olivotto IA, Weir LM, Kim-Sing C, et al. Late cosmetic results of short fractionation for breast conservation. Radiother Oncol. 1996;41:7–13.
National Comprehensive Cancer Network. National Comprehensive Cancer Network Guideline Version 1.2022, https://www.nccn.org/guidelines/guidelines-detail?category=1&id=1419 [accessed 25 November 2021].
King TA, Bolton JS, Kuske RR, et al. Long-term results of wide-field brachytherapy as the sole method of radiation therapy after segmental mastectomy for T(is,1,2) breast cancer. Am J Surg. 2000;180:299–304.
Keynes G. The place of radium in the treatment of cancer of the breast. Ann Surg. 1937;106:619–30.
Strnad V, Ott OJ, Hildebrandt G, et al. 5-Year results of accelerated partial breast irradiation using sole interstitial multicatheter brachytherapy versus whole-breast irradiation with boost after breast-conserving surgery for low-risk invasive and in situ carcinoma of the female breast: a randomised, phase 3, non-inferiority trial. Lancet. 2016;387:229–38.
Nose T, Komoike Y, Yoshida K, et al. A pilot study of wider use of accelerated partial breast irradiation: intraoperative margin-directed re-excision combined with sole high-dose-rate interstitial brachytherapy. Breast Cancer. 2006;13:289–99.
Yoshida K, Nose T, Masuda N, et al. Preliminary result of accelerated partial breast irradiation after breast-conserving surgery. Breast Cancer. 2009;16:105–12.
Otani Y, Nose T, Dokiya T, et al. A Japanese prospective multi-institutional feasibility study on accelerated partial breast irradiation using interstitial brachytherapy: treatment planning and quality assurance. Radiat Oncol. 2015;10:126.
Nose T, Otani Y, Asahi S, et al. A Japanese prospective multi-institutional feasibility study on accelerated partial breast irradiation using interstitial brachytherapy: clinical results with a median follow-up of 26 months. Breast Cancer. 2016;23:861–8.
Yoden E, Nose T, Otani Y, et al. Uncertainty of cosmetic evaluation after accelerated partial breast irradiation: interim analysis of a Japanese prospective multi-institutional feasibility study. Jpn J Radiol. 2017;35:381–8.
Nose T. APBI: Japanese experience and Asian trend. in Brachytherapy techniques and evidences. In: Yoshioka Y, Itami J, Oguchi M, Nakano T, editors. Brachytherapy Singapore. Springer; 2019. p. 209–20.
Harris JR, Levene MB, Svensson G, Hellman S. Analysis of cosmetic results following primary radiation therapy for stage I and II carcinoma of the breast. Int J Radiat Oncol Biol Phys. 1979;5:257–61.
Polgár C, Sulyok Z, Fodor J, et al. Sole brachytherapy of the tumor bed after conservative surgery for T1 breast cancer: five-year results of a phase I-II study and initial findings of a randomized phase III trial. J Surg Oncol. 2002;80:121–8.
Aliyev JA, Isayev IH, Akbarov KS, et al. High-dose-rate interstitial brachytherapy for accelerated partial breast irradiation—trial results of Azerbaijan National Center of Oncology. J Contemp Brachytherapy. 2017;9:106–11.
Polgár C, Ott OJ, Hildebrandt G, et al. Late side-effects and cosmetic results of accelerated partial breast irradiation with interstitial brachytherapy versus whole-breast irradiation after breast-conserving surgery for low-risk invasive and in-situ carcinoma of the female breast: 5-year results of a randomised, controlled, phase 3 trial. Lancet Oncol. 2017;18:259–68.
Georg P, Kirisits C, Goldner G, Dörr W, Hammer J, Pötzi R, Berger D, Dimopoulos J, Georg D, Pötter R. Correlation of dose–volume parameters, endoscopic and clinical rectal side effects in cervix cancer patients treated with definitive radiotherapy including MRI-based brachytherapy. Radiother Oncol. 2009;91:173–80.
Yoshida K, Otani Y, Nose T, et al. Case report of a dose-volume histogram analysis of rib fracture after accelerated partial breast irradiation: interim analysis of a Japanese prospective multi-institutional feasibility study. J Contemp Brachyther. 2018;10:274–8.
Polat AV, Soran A, Andacoglu O, Kamali Polat A, McGuire K, Diego E, Johnson R. The importance of pre-operative needle core breast biopsy results on resected tissue volume, margin status, and cosmesis. J BUON. 2013;18:601–7.
Nozaki M, Kagami Y, Mitsumori M, et al. Multicenter investigation of late adverse events in Japanese women treated with breast-conserving surgery plus conventional fractionated whole-breast radiation therapy. Jpn J Clin Oncol. 2012;42:522–7.
Sato K, Fuchikami H, Takeda N, et al. Efficacy of single-plane implant technique in partial breast brachytherapy in small-breasted patients. Int J Radiat Oncol Biol Phys. 2020;106:830–7.
Chagpar AB, Killelea BK, Tsangaris TN, et al. A randomized, controlled trial of cavity shave margins in breast cancer. N Engl J Med. 2015;373:503–10.
Acknowledgements
This work was supported in part by Japan Agency for Medical Research and Development (17K10496).
Author information
Authors and Affiliations
Corresponding author
Ethics declarations
Conflict of interest
One of the authors (Ken Yoshida) assumes an advisory role of Chiyoda Technol® dealing with remote afterloader (microSelectron-HDR) in Japan.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
About this article
Cite this article
Yoshida, K., Nose, T., Otani, Y. et al. A Japanese prospective multi-institutional feasibility study on accelerated partial breast irradiation using multicatheter interstitial brachytherapy: clinical results with a median follow-up of 60 months. Breast Cancer 29, 636–644 (2022). https://doi.org/10.1007/s12282-022-01339-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12282-022-01339-z