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Corradini S, Pazos M, Schönecker S, Reitz D, Niyazi M, Ganswindt U, Schrodi S, Braun M, Pölcher M, Mahner S, Harbeck N, Engel J, Belka C. Role of postoperative radiotherapy in reducing ipsilateral recurrence in DCIS: an observational study of 1048 cases. Radiat Oncol 2018; 13:25. [PMID: 29426355 PMCID: PMC5807793 DOI: 10.1186/s13014-018-0964-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 01/29/2018] [Indexed: 01/04/2023] Open
Abstract
Background The objective of the present study was to evaluate the effectiveness of postoperative radiotherapy after breast conserving surgery (BCS) in DCIS in a large patient population treated in clinical practice. Methods Data were provided by the population-based Munich Cancer Registry. Between 1998 and 2014, 1048 female patients with diagnosis of DCIS and treated at two Breast Care Centres were included in this observational study. The effectiveness of postoperative radiotherapy and variables predicting the use of radiotherapy were retrospectively analysed. Results After adjusting for age, tumour characteristics and therapies, Cox regression analysis for local recurrence-free survival identified RT as an independent predictor for improved local control (HR: 0.579; 95%CI: 0.384–0.872, p = 0.008). Ten-year cumulative incidence of in-breast recurrences was 20.0% following BCS, compared to 13.6% in patients receiving postoperative radiotherapy (p = 0.012). As an estimate for disease-specific survival, 10-year relative survival was 105.4% for patients receiving postoperative radiotherapy and 101.6% without radiotherapy. On multivariate analysis, postoperative radiotherapy was not associated with improved overall survival (HR 0.526; 95%CI: 0.263–1.052, p = 0.069). Over time, a significant increase of RT was registered: while 1998 only 42.9% of patients received postoperative radiotherapy, the proportion rose to 91.2% in 2014. Women aged < 50 years (OR: 2.559, 95%CI: 1.416–4.625, p < 0.001) or with negative hormone receptor status (OR: 2.625, 95%CI: 1.458–4.728, p = 0.001) or receiving endocrine therapy (OR: 1.762, 95%CI: 1.060–2.927, p = 0.029) were more likely to receive postoperative radiotherapy after BCS. Conclusions In conclusion, this study provides insights regarding the adoption and treatment pattern of postoperative RT following BCS for DCIS in a large cohort reflecting “real-life” clinical practice in this setting. Postoperative RT was found to be associated with a reduced risk of ipsilateral recurrence and no survival benefit compared to observation alone.
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Affiliation(s)
- Stefanie Corradini
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany.
| | - Montserrat Pazos
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Stephan Schönecker
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Daniel Reitz
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Maximilian Niyazi
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany
| | - Ute Ganswindt
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany.,Department of Therapeutic Radiology and Oncology, Innsbruck Medical University, Innsbruck, Austria
| | - Simone Schrodi
- Munich Cancer Registry (MCR) of the Munich Tumour Centre (TZM) at the Institute of Medical Information Processing, Biometry and Epidemiology (IBE), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Michael Braun
- Red Cross Breast Centre, Taxisstr. 3, 80637, Munich, Germany
| | - Martin Pölcher
- Red Cross Breast Centre, Taxisstr. 3, 80637, Munich, Germany
| | - Sven Mahner
- Department of Gynecology and Obstetrics, Breast Centre, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.,Comprehensive Cancer Center (CCC-LMU), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Nadia Harbeck
- Department of Gynecology and Obstetrics, Breast Centre, University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany.,Comprehensive Cancer Center (CCC-LMU), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Jutta Engel
- Munich Cancer Registry (MCR) of the Munich Tumour Centre (TZM) at the Institute of Medical Information Processing, Biometry and Epidemiology (IBE), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
| | - Claus Belka
- Department of Radiation Oncology, University Hospital, LMU Munich, Marchioninistraße 15, 81377, Munich, Germany.,Comprehensive Cancer Center (CCC-LMU), University Hospital, LMU Munich, Marchioninistr. 15, 81377, Munich, Germany
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Cambra M, Farrús B, Moreno F, Anglada L, Arenas M, Ballester R, Casals J, Cusidó M, García V, Gutiérrez C, Mollà M, Pedro A, Reyes V, Sanz X. Management of breast ductal carcinoma in situ in Catalonia, Spain: Results from the Grup Oncologic Calalà-Occità-Catalonia survey with 9-year follow up. Breast 2017; 35:196-202. [DOI: 10.1016/j.breast.2017.08.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2017] [Revised: 07/31/2017] [Accepted: 08/07/2017] [Indexed: 12/25/2022] Open
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Kuerer HM, Smith BD, Chavez-MacGregor M, Albarracin C, Barcenas CH, Santiago L, Edgerton ME, Rauch GM, Giordano SH, Sahin A, Krishnamurthy S, Woodward W, Tripathy D, Yang WT, Hunt KK. DCIS Margins and Breast Conservation: MD Anderson Cancer Center Multidisciplinary Practice Guidelines and Outcomes. J Cancer 2017; 8:2653-2662. [PMID: 28928852 PMCID: PMC5604195 DOI: 10.7150/jca.20871] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 07/14/2017] [Indexed: 12/31/2022] Open
Abstract
Recent published guidelines suggest that adequate margins for DCIS should be ≥ 2 mm after breast conserving surgery followed by radiotherapy (RT). Many groups now use this guideline as an absolute indication for additional surgery. This article describes detailed multidisciplinary practices including extensive preoperative/intraoperative pathologic/histologic image-guided assessment of margins, offering some patients with small low/intermediate grade DCIS no RT, the use/magnitude of radiation boost tailoring to margin width, and endocrine therapy for ER-positive DCIS. Use of these protocols over the past 20-years has resulted in 10-year local recurrence rates below 5% for patients with negative margins < 2 mm who received RT. Patients with margins < 2 mm who do not receive RT experience significantly higher local failure rates. Thus, there is not an absolute need to achieve wider negative surgical margins when < 2 mm for patients treated with RT and this should be determined by the multidisciplinary team. Utilization of these multidisciplinary treatment protocols and techniques may not be exportable and extrapolated to all hospitals, breast programs and systems as they can be complex and resource intensive.
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Affiliation(s)
- Henry M. Kuerer
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Benjamin D. Smith
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Mariana Chavez-MacGregor
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Constance Albarracin
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Carlos H. Barcenas
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Lumarie Santiago
- Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Mary E. Edgerton
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Gaiane M. Rauch
- Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Sharon H. Giordano
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
- Department of Health Services Research, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Aysegul Sahin
- Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Savitri Krishnamurthy
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Wendy Woodward
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Debasish Tripathy
- Department of Breast Medical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Wei T. Yang
- Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Kelly K. Hunt
- Department of Breast Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
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Withrow DR, Morton LM, Curtis RE, Schonfeld SJ, Berrington de González A. Radiotherapy for ductal carcinoma in situ and risk of second non-breast cancers. Breast Cancer Res Treat 2017; 166:299-306. [PMID: 28744752 DOI: 10.1007/s10549-017-4410-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 07/17/2017] [Indexed: 11/29/2022]
Abstract
PURPOSE Radiotherapy for ductal carcinoma (DCIS) is increasing, but the risks and benefits of the treatment remain uncertain. We aimed to investigate the relationship between radiotherapy for DCIS and risk of second non-breast cancers in a large US cohort. METHODS We conducted a retrospective cohort study of 52,556 women in 12 U.S. population-based cancer registries diagnosed with first primary DCIS during 1992-2008 at age 25-79 years. We estimated relative risks (RRs), attributable risks (AR), and excess absolute risks (EAR) of second non-breast cancers associated with radiotherapy using Poisson regression adjusted for age at year of diagnosis, grade, hormonal therapy (yes/no or unknown), and time since diagnosis. RESULTS Approximately half of the women (46.3%) received radiotherapy. Radiotherapy was associated with an increased risk of all second non-breast cancers combined [RR 1.17, 95% confidence interval (CI) 1.08-1.28] and all in-field, radiation-related second cancers combined (RR 1.37, 95% CI 1.15-1.63), driven by second lung cancers (RR 1.33, 95% CI 1.10-1.60) and non-CLL leukemia (RR 1.71, 95% CI 1.02-2.86). The estimated cumulative excess risk of all second non-breast cancers was 0.8% by 15 years after DCIS diagnosis. CONCLUSIONS Radiotherapy was associated with an increased risk of second non-breast cancers. The specific excess of cancers at sites likely in/near the radiotherapy field suggests the findings are unlikely due exclusively to confounding, but further research into factors related to receipt of radiotherapy is needed. Our risk estimates can be used to help assess the balance of the risks and benefits of radiotherapy for DCIS and to inform clinical practice.
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Affiliation(s)
- Diana R Withrow
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA.
| | - Lindsay M Morton
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Rochelle E Curtis
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Sara J Schonfeld
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Amy Berrington de González
- Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
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