This article provides an update of recent progress using partial breast irradiation (PBI) for the treatment of early-stage breast cancer, rather than whole breast radiotherapy (WBRT), which is the standard of care. Several large, prospective, randomized trials are nearing target accrual or have been completed, including the NSABP/RTOG trial, the Milan-based intraoperative radiation trial, and the international TARGIT trial, and the status of each is discussed. The American Society for Radiation Oncology has also published a consensus statement to guide the use of PBI until some of the phase III trials are more mature. Finally, several articles have appeared recently, reporting unexpected adverse effects of PBI in small series, and this information is reviewed. Several recent prospective trials of WBRT are also discussed, with the theme of comparing the standard 25 fractions to a shortened, hypofractionated trial arm delivering equivalent doses of WBRT in approximately 15 treatments, another radiation strategy for a shortened course of treatment after breast-conserving surgery.
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Beryl McCormick
This review of clinical data from partial-breast treatment studies discusses results from a single institution's experience using brachytherapy catheters, the MammoSite balloon (Proxima Company, Alpharetta, GA), and three-dimensional external beam partial-breast treatment. Rationale, techniques, dose schedules, and available results are presented. Intra-operative single-dose radiation to the lumpectomy site is also reviewed. The National Surgical Adjuvant Breast and Bowel Project (NSABP) and Radiation Therapy Oncology Group (RTOG) cooperative groups are opening a phase III trial to compare partial-breast treatment to the standard 5- to 6-week course of whole-breast radiation. The design of this study is also presented in this review.
Beryl McCormick
The 2007 National Comprehensive Cancer Network Breast Cancer Clinical Practice Guidelines in Oncology include a consideration for hyperthermia (HT) and radiation for women with recurrent locoregional advanced breast cancers after first-line surgery or radiation failed. Although HT in this setting has been used for several decades, recent reports are few. This article reviews the data from several recent studies, selected because they included at least 100 patients. Unresolved issues of radiation dose, optimal temperature and timing of HT, and quality assurance problems with thermometry are apparent from these studies. Although clearly an effective treatment option in this clinical scenario, more research on HT and radiation is needed before this treatment combination can be considered standard care.
Robert W. Carlson, Susan Moench, Arti Hurria, Lodovico Balducci, Harold J. Burstein, Lori J. Goldstein, William J. Gradishar, Kevin S. Hughes, Mohammad Jahanzeb, Stuart M. Lichtman, Lawrence B. Marks, Joan S. McClure, Beryl McCormick, Lisle M. Nabell, Lori J. Pierce, Mary Lou Smith, Neal S. Topham, Tiffany A. Traina, John H. Ward, and Eric P. Winer
Breast cancer is common in older women, and the segment of the U.S. population aged 65 years and older is growing rapidly. Consequently, awareness is increasing of the need to identify breast cancer treatment recommendations to assure optimal, individualized treatment of older women with breast cancer. However, the development of these recommendations is limited by the heterogeneous nature of this population with respect to functional status, social support, life expectancy, and the presence of comorbidities, and by the underrepresentation of older patients with breast cancer in randomized clinical trials. The NCCN Breast Cancer in the Older Woman Task Force was convened to provide a forum for framing relevant questions on topics that impact older women with early-stage, locally advanced, and metastatic breast cancer. The task force is a multidisciplinary panel of 18 experts in breast cancer representing medical oncology, radiation oncology, surgical oncology, geriatric oncology, geriatrics, plastic surgery, and patient advocacy. All task force members were from NCCN institutions and were identified and invited solely by NCCN. Members were charged with identifying evidence relevant to their specific expertise. During a 2-day meeting, individual members provided didactic presentations; these presentations were followed by extensive discussions during which areas of consensus and controversy were identified on topics such as defining the “older” breast cancer patient; geriatric assessment tools in the oncology setting; attitudes of older patients with breast cancer and their physicians; tumor biology in older versus younger women with breast cancer; implementation of specific interventions in older patients with breast cancer, such as curative surgery, surgical axillary staging, radiation therapy, reconstructive surgery, endocrine therapy, chemotherapy, HER2-directed therapy, and supportive therapies; and areas requiring future studies. (JNCCN 2008;6[Suppl 4]:S1–S25)