Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2009-5-8
pubmed:abstractText
Whole breast radiation therapy (RT) after breast-conserving surgery is sometimes omitted in Japan; however, its impact on the outcome has not been properly evaluated. A multi-institutional retrospective study was conducted to clarify the impact of RT on local control after breast-conserving therapy (BCT). Data were collected from 3576 patients from 37 participating hospitals, of whom 1763 were eligible for analyses. Five hundred and five patients had ipsilateral breast tumor recurrence (IBTR) and 1258 patients did not. Details of IBTR were available for 245 of 505 patients who had IBTR, the location of IBTR was within or adjacent to the original tumor bed in 168 patients (68.6%). IBTR was salvaged with partial mastectomy in 119 patients (48.6%). Second recurrence in the ipsilateral breast was observed in 27 patients (11.0%). Univariate analyses demonstrated that administration of RT, the resection margin status, hormone responsiveness, T stage, N stage and stage were significantly related to IBTR. Multivariate analysis demonstrated that administration of RT, T stage and N stage were significantly correlated to IBTR. Among them, administration of RT had the largest impact on RT and it decreased the risk of IBTR by 77.3%. Omission of RT had the most significant impact on IBTR. RT should be given as a standard component of BCT.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
1021-335X
pubmed:author
pubmed:issnType
Print
pubmed:volume
21
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1461-6
pubmed:dateRevised
2010-11-18
pubmed:meshHeading
pubmed-meshheading:19424624-Adult, pubmed-meshheading:19424624-Asian Continental Ancestry Group, pubmed-meshheading:19424624-Breast Neoplasms, pubmed-meshheading:19424624-Disease-Free Survival, pubmed-meshheading:19424624-Female, pubmed-meshheading:19424624-Humans, pubmed-meshheading:19424624-Japan, pubmed-meshheading:19424624-Kaplan-Meier Estimate, pubmed-meshheading:19424624-Mastectomy, Segmental, pubmed-meshheading:19424624-Middle Aged, pubmed-meshheading:19424624-Multivariate Analysis, pubmed-meshheading:19424624-Neoplasm Recurrence, Local, pubmed-meshheading:19424624-Neoplasm Staging, pubmed-meshheading:19424624-Proportional Hazards Models, pubmed-meshheading:19424624-Radiotherapy, Adjuvant, pubmed-meshheading:19424624-Reoperation, pubmed-meshheading:19424624-Retrospective Studies, pubmed-meshheading:19424624-Risk Assessment, pubmed-meshheading:19424624-Risk Factors, pubmed-meshheading:19424624-Salvage Therapy, pubmed-meshheading:19424624-Treatment Outcome
pubmed:year
2009
pubmed:articleTitle
Impact of radiation therapy on breast-conserving therapy for breast cancer in Japanese women: a retrospective analyses of multi-institutional experience. Kansai Breast Cancer Radiation Therapy Study Group.
pubmed:affiliation
Department of Radiation Oncology and Image-Applied Therapy, Graduate School of Medicine, Kyoto University, Kyoto 606-8507, Japan. mitsumo@kuhp.kyoto-u.ac.jp
pubmed:publicationType
Journal Article, Multicenter Study