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- W2091218527 abstract "We have conducted a clinical trial to evaluate the short course whole breast irradiation to be equally effective and safe and have the advantage in the point of convenience in comparison with conventional fractionation radiotherapy. In this study, we compared the acute skin reactions between both arms. Patients eligible for this study were as follows: breast cancer, Stage 0 to II; surgical intervention to the breast, lumpectomy or quadrantectomy; surgical intervention to the axilla, axillary node dissection or sentinel lymph node biopsy; positive lymph nodes, less than 3; concurrent chemotherapy, none. Prior to the treatment, all patients were explained about the merit and demerit of the two treatment schedules and the patients chose the irradiation schedule freely. The short course irradiation consisted of 43.2 Gy/16f (2.7 Gy/f) to the whole breast, with additional tumor bed boost of 8.1 Gy/3f if the surgical margin was positive or less than 5 mm. The conventional course irradiation consisted of 50 Gy/25f (2 Gy/f) to the whole breast, with additional tumor bed boost of 10 Gy/5f if the surgical margin was positive or less than 5 mm or 6 Gy/3f if the surgical margin was negative, which has been our standard of care. All breasts are irradiated with 4 MV photon tangential fields using sliding window technique IMRT. The inhomogeneity of PTV are planned to be less than 10% (between 105% and 95%). The acute adverse effects have been evaluated weekly during treatment and 1 week after the completion of treatment. Between April 1, 2006 and December 31, 2007, 507 cases were registered. Among them, 249 cases (49%) were short course and 258 cases (51%) were conventional course. The cases with positive or closed surgical margins were 107 cases (43%) in short course and 152 cases (59%) in conventional course. Menopausal status was pre in 224 cases (44%) and post in 283 cases (56%). Primary systemic chemotherapy was given in 137 cases (27%) and concurrent endocrine therapy was given in 144 cases (28%). Grade 2 acute skin reactions were observed in 9 cases (4%) in short course and 64 cases (25%) in conventional course (p < 0.001). Factors showed strong correlation with acute skin reactions were menopausal status (in the postmenopausal patients, it was significantly low. p < 0.001) and total doses. In phantom study, IMRT improved homogeneity of surface dose over 10% in maximum point than physical wedge. The short course whole breast irradiation was not only convenient but also superior for less acute skin reaction in using sliding window technique IMRT." @default.
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- W2091218527 date "2008-09-01" @default.
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- W2091218527 title "Comparison of Acute Skin Reaction between Short Course and Conventional Fractionation Radiotherapy in Breast Conserving Therapy" @default.
- W2091218527 doi "https://doi.org/10.1016/j.ijrobp.2008.06.720" @default.
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