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Relationship between age at diagnosis and outcome of premenopausal breast cancer: age less than 35 years is a reasonable cut-off for defining young age-onset breast cancer

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dc.contributor.authorHan, Wonshik-
dc.contributor.authorKang, So Young-
dc.date.accessioned2012-06-29T05:17:01Z-
dc.date.available2012-06-29T05:17:01Z-
dc.date.issued2010-01-
dc.identifier.citationBREAST CANCER RESEARCH AND TREATMENT; Vol.119 1; 193-200ko_KR
dc.identifier.issn0167-6806-
dc.identifier.urihttp://hdl.handle.net/10371/77934-
dc.description.abstractPrevious studies have reported significantly worse outcomes in younger women with breast cancer. The cut-off for young age differed between studies and it is unclear whether the survival-age relationship is a linear function across age in premenopausal women. We analyzed data on 9,885 breast cancer patients aged a parts per thousand currency sign50 years who entered the Korean Breast Cancer Society Registration Program between 1992 and 2001. Overall survival data were compared among age groups. The median follow-up duration was 74.4 months. Of all patients, 351 were aged < 30 years (Group I), 1,092 were aged 30-34 years (Group II), 2,087 were aged 35-39 years (Group III), and 6,354 were aged 40-50 years (Group IV). In univariate and multivariate analyses, Group I patients showed a worse outcome than Group II patients, and Group II patients showed a worse outcome than Group III patients. Interestingly, the survival rates of Group III and Group IV patients did not differ significantly. This survival trend according to age group was not found in the subgroup of patients with hormone receptor-negative tumors. In patients aged < 35 years, the risk of death rose by 5% for every 1-year reduction in age, whereas there was no significant change in death risk with age in patients aged 35-50 years. We show that risk of death from breast cancer increases sharply in women younger than 35 years. This suggests that age less than 35 years is a reasonable cut-off for defining young age-onset breast cancer.ko_KR
dc.language.isoenko_KR
dc.publisherSPRINGERko_KR
dc.subjectBreast cancerko_KR
dc.subjectPremenopausalko_KR
dc.subjectSurvivalko_KR
dc.subjectYoung ageko_KR
dc.subjectPrognosisko_KR
dc.titleRelationship between age at diagnosis and outcome of premenopausal breast cancer: age less than 35 years is a reasonable cut-off for defining young age-onset breast cancerko_KR
dc.typeArticleko_KR
dc.contributor.AlternativeAuthor한원식-
dc.contributor.AlternativeAuthor강소영-
dc.identifier.doi10.1007/s10549-009-0388-z-
dc.citation.journaltitleBREAST CANCER RESEARCH AND TREATMENT-
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College of Medicine/School of Medicine (의과대학/대학원)Surgery (외과학전공)Journal Papers (저널논문_외과학전공)
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