Stratification of breast cancer risk in women with atypia: a Mayo cohort study.

Stratification of breast cancer risk in women with atypia: a Mayo cohort study. Research Abstract Details 

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Stratification of breast cancer risk in women with atypia: a Mayo cohort study. Abstract Text:

Amy C Degnim,Daniel W Visscher,Hal K Berman,Marlene H Frost,Thomas A Sellers,Robert A Vierkant,Shaun D Maloney,V Shane Pankratz,Piet C de Groen,Wilma L Lingle,Karthik Ghosh,Lois Penheiter,Thea Tlsty,L Joseph Melton,Carol A Reynolds,Lynn C Hartmann,

PURPOSE: Atypical hyperplasia is a well-recognized risk factor for breast cancer, conveying an approximately four-fold increased risk. Data regarding long-term absolute risk and factors for risk stratification are needed. PATIENTS AND METHODS: Women with atypical hyperplasia in the Mayo Benign Breast Disease Cohort were identified through pathology review. Subsequent breast cancers were identified via medical records and a questionnaire. Relative risks (RRs) were estimated using standardized incidence ratios, comparing the observed number of breast cancers with those expected based on Iowa Surveillance, Epidemiology, and End Results (SEER) data. Age, histologic factors, and family history were evaluated as risk modifiers. Plots of cumulative breast cancer incidence provided estimates of risk over time. RESULTS: With mean follow-up of 13.7 years, 66 breast cancers (19.9%) occurred among 331 women with atypia. RR of breast cancer with atypia was 3.88 (95% CI, 3.00 to 4.94). Marked elevations in risk were seen with multifocal atypia (eg, three or more foci with calcifications [RR, 10.35; 95% CI, 6.13 to 16.4]). RR was higher for younger women (< 45; RR, 6.76; 95% CI, 3.24 to 12.4). Risk was similar for atypical ductal and atypical lobular hyperplasia, and family history added no significant risk. Breast cancer risk remained elevated over 20 years, and the cumulative incidence approached 35% at 30 years. CONCLUSION: Among women with atypical hyperplasia, multiple foci of atypia and the presence of histologic calcifications may indicate "very high risk" status (> 50% risk at 20 years). A positive family history does not further increase risk in women with atypia.

Stratification of breast cancer risk in women with atypia: a Mayo cohort study. Publishing Authors By Initials

AC Degnim,DW Visscher,HK Berman,MH Frost,TA Sellers,RA Vierkant,SD Maloney,VS Pankratz,PC de Groen,WL Lingle,K Ghosh,L Penheiter,T Tlsty,LJ Melton,CA Reynolds,LC Hartmann,

For similar natural sciences: time: time factors research abstracts see: natural sciences: time: time factors research

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Stratification of breast cancer risk in women with atypia: a Mayo cohort study. Journal Published:

PUBLICATION TYPE: Research Support, U.S. Gov't,

Journal: Journal of clinical oncology : official journal of

VOLUME: 25

Page Numbers: 2671-7

Journal Abbreviation: J. Clin. Oncol.

ISSN: 1527-7755

DAY: 11

MONTH: 06

YEAR: 2007

Stratification of breast cancer risk in women with atypia: a Mayo cohort study. Information

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LANGUAGE: eng

NlmUniqueID: 8309333

Stratification of breast cancer risk in women with atypia: a Mayo cohort study. Keywords Mesh Terms:

KEYWORDS: Time Factors

MESH TERMS: epidemiology

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Grant and Affiliation Information for Stratification of breast cancer risk in women with atypia: a Mayo cohort study.

AFFILIATION: Division of General Surgery, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.

Country: United States

AGENCY: United States NCI

GRANT: R01 CA46332

ACRONYM: CA

MEDLINETA: J Clin Oncol

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