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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Mammographic Density Phenotypes and Risk of Breast Cancer: A Meta-analysis</title><author><name sortKey="Pettersson, Andreas" sort="Pettersson, Andreas" uniqKey="Pettersson A" first="Andreas" last="Pettersson">Andreas Pettersson</name></author><author><name sortKey="Graff, Rebecca E" sort="Graff, Rebecca E" uniqKey="Graff R" first="Rebecca E." last="Graff">Rebecca E. Graff</name></author><author><name sortKey="Ursin, Giske" sort="Ursin, Giske" uniqKey="Ursin G" first="Giske" last="Ursin">Giske Ursin</name></author><author><name sortKey="Dos Santos Silva, Isabel" sort="Dos Santos Silva, Isabel" uniqKey="Dos Santos Silva I" first="Isabel" last="Dos Santos Silva">Isabel Dos Santos Silva</name></author><author><name sortKey="Mccormack, Valerie" sort="Mccormack, Valerie" uniqKey="Mccormack V" first="Valerie" last="Mccormack">Valerie Mccormack</name></author><author><name sortKey="Baglietto, Laura" sort="Baglietto, Laura" uniqKey="Baglietto L" first="Laura" last="Baglietto">Laura Baglietto</name></author><author><name sortKey="Vachon, Celine" sort="Vachon, Celine" uniqKey="Vachon C" first="Celine" last="Vachon">Celine Vachon</name></author><author><name sortKey="Bakker, Marije F" sort="Bakker, Marije F" uniqKey="Bakker M" first="Marije F." last="Bakker">Marije F. Bakker</name></author><author><name sortKey="Giles, Graham G" sort="Giles, Graham G" uniqKey="Giles G" first="Graham G." last="Giles">Graham G. Giles</name></author><author><name sortKey="Chia, Kee Seng" sort="Chia, Kee Seng" uniqKey="Chia K" first="Kee Seng" last="Chia">Kee Seng Chia</name></author><author><name sortKey="Czene, Kamila" sort="Czene, Kamila" uniqKey="Czene K" first="Kamila" last="Czene">Kamila Czene</name></author><author><name sortKey="Eriksson, Louise" sort="Eriksson, Louise" uniqKey="Eriksson L" first="Louise" last="Eriksson">Louise Eriksson</name></author><author><name sortKey="Hall, Per" sort="Hall, Per" uniqKey="Hall P" first="Per" last="Hall">Per Hall</name></author><author><name sortKey="Hartman, Mikael" sort="Hartman, Mikael" uniqKey="Hartman M" first="Mikael" last="Hartman">Mikael Hartman</name></author><author><name sortKey="Warren, Ruth M L" sort="Warren, Ruth M L" uniqKey="Warren R" first="Ruth M. L." last="Warren">Ruth M. L. Warren</name></author><author><name sortKey="Hislop, Greg" sort="Hislop, Greg" uniqKey="Hislop G" first="Greg" last="Hislop">Greg Hislop</name></author><author><name sortKey="Chiarelli, Anna M" sort="Chiarelli, Anna M" uniqKey="Chiarelli A" first="Anna M." last="Chiarelli">Anna M. Chiarelli</name></author><author><name sortKey="Hopper, John L" sort="Hopper, John L" uniqKey="Hopper J" first="John L." last="Hopper">John L. Hopper</name></author><author><name sortKey="Krishnan, Kavitha" sort="Krishnan, Kavitha" uniqKey="Krishnan K" first="Kavitha" last="Krishnan">Kavitha Krishnan</name></author><author><name sortKey="Li, Jingmei" sort="Li, Jingmei" uniqKey="Li J" first="Jingmei" last="Li">Jingmei Li</name></author><author><name sortKey="Li, Qing" sort="Li, Qing" uniqKey="Li Q" first="Qing" last="Li">Qing Li</name></author><author><name sortKey="Pagano, Ian" sort="Pagano, Ian" uniqKey="Pagano I" first="Ian" last="Pagano">Ian Pagano</name></author><author><name sortKey="Rosner, Bernard A" sort="Rosner, Bernard A" uniqKey="Rosner B" first="Bernard A." last="Rosner">Bernard A. Rosner</name></author><author><name sortKey="Wong, Chia Siong" sort="Wong, Chia Siong" uniqKey="Wong C" first="Chia Siong" last="Wong">Chia Siong Wong</name></author><author><name sortKey="Scott, Christopher" sort="Scott, Christopher" uniqKey="Scott C" first="Christopher" last="Scott">Christopher Scott</name></author><author><name sortKey="Stone, Jennifer" sort="Stone, Jennifer" uniqKey="Stone J" first="Jennifer" last="Stone">Jennifer Stone</name></author><author><name sortKey="Maskarinec, Gertraud" sort="Maskarinec, Gertraud" uniqKey="Maskarinec G" first="Gertraud" last="Maskarinec">Gertraud Maskarinec</name></author><author><name sortKey="Boyd, Norman F" sort="Boyd, Norman F" uniqKey="Boyd N" first="Norman F." last="Boyd">Norman F. Boyd</name></author><author><name sortKey="Van Gils, Carla H" sort="Van Gils, Carla H" uniqKey="Van Gils C" first="Carla H." last="Van Gils">Carla H. Van Gils</name></author><author><name sortKey="Tamimi, Rulla M" sort="Tamimi, Rulla M" uniqKey="Tamimi R" first="Rulla M." last="Tamimi">Rulla M. Tamimi</name></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">24816206</idno><idno type="pmc">4568991</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4568991</idno><idno type="RBID">PMC:4568991</idno><idno type="doi">10.1093/jnci/dju078</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000394</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000394</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Mammographic Density Phenotypes and Risk of Breast Cancer: A Meta-analysis</title><author><name sortKey="Pettersson, Andreas" sort="Pettersson, Andreas" uniqKey="Pettersson A" first="Andreas" last="Pettersson">Andreas Pettersson</name></author><author><name sortKey="Graff, Rebecca E" sort="Graff, Rebecca E" uniqKey="Graff R" first="Rebecca E." last="Graff">Rebecca E. Graff</name></author><author><name sortKey="Ursin, Giske" sort="Ursin, Giske" uniqKey="Ursin G" first="Giske" last="Ursin">Giske Ursin</name></author><author><name sortKey="Dos Santos Silva, Isabel" sort="Dos Santos Silva, Isabel" uniqKey="Dos Santos Silva I" first="Isabel" last="Dos Santos Silva">Isabel Dos Santos Silva</name></author><author><name sortKey="Mccormack, Valerie" sort="Mccormack, Valerie" uniqKey="Mccormack V" first="Valerie" last="Mccormack">Valerie Mccormack</name></author><author><name sortKey="Baglietto, Laura" sort="Baglietto, Laura" uniqKey="Baglietto L" first="Laura" last="Baglietto">Laura Baglietto</name></author><author><name sortKey="Vachon, Celine" sort="Vachon, Celine" uniqKey="Vachon C" first="Celine" last="Vachon">Celine Vachon</name></author><author><name sortKey="Bakker, Marije F" sort="Bakker, Marije F" uniqKey="Bakker M" first="Marije F." last="Bakker">Marije F. Bakker</name></author><author><name sortKey="Giles, Graham G" sort="Giles, Graham G" uniqKey="Giles G" first="Graham G." last="Giles">Graham G. Giles</name></author><author><name sortKey="Chia, Kee Seng" sort="Chia, Kee Seng" uniqKey="Chia K" first="Kee Seng" last="Chia">Kee Seng Chia</name></author><author><name sortKey="Czene, Kamila" sort="Czene, Kamila" uniqKey="Czene K" first="Kamila" last="Czene">Kamila Czene</name></author><author><name sortKey="Eriksson, Louise" sort="Eriksson, Louise" uniqKey="Eriksson L" first="Louise" last="Eriksson">Louise Eriksson</name></author><author><name sortKey="Hall, Per" sort="Hall, Per" uniqKey="Hall P" first="Per" last="Hall">Per Hall</name></author><author><name sortKey="Hartman, Mikael" sort="Hartman, Mikael" uniqKey="Hartman M" first="Mikael" last="Hartman">Mikael Hartman</name></author><author><name sortKey="Warren, Ruth M L" sort="Warren, Ruth M L" uniqKey="Warren R" first="Ruth M. L." last="Warren">Ruth M. L. Warren</name></author><author><name sortKey="Hislop, Greg" sort="Hislop, Greg" uniqKey="Hislop G" first="Greg" last="Hislop">Greg Hislop</name></author><author><name sortKey="Chiarelli, Anna M" sort="Chiarelli, Anna M" uniqKey="Chiarelli A" first="Anna M." last="Chiarelli">Anna M. Chiarelli</name></author><author><name sortKey="Hopper, John L" sort="Hopper, John L" uniqKey="Hopper J" first="John L." last="Hopper">John L. Hopper</name></author><author><name sortKey="Krishnan, Kavitha" sort="Krishnan, Kavitha" uniqKey="Krishnan K" first="Kavitha" last="Krishnan">Kavitha Krishnan</name></author><author><name sortKey="Li, Jingmei" sort="Li, Jingmei" uniqKey="Li J" first="Jingmei" last="Li">Jingmei Li</name></author><author><name sortKey="Li, Qing" sort="Li, Qing" uniqKey="Li Q" first="Qing" last="Li">Qing Li</name></author><author><name sortKey="Pagano, Ian" sort="Pagano, Ian" uniqKey="Pagano I" first="Ian" last="Pagano">Ian Pagano</name></author><author><name sortKey="Rosner, Bernard A" sort="Rosner, Bernard A" uniqKey="Rosner B" first="Bernard A." last="Rosner">Bernard A. Rosner</name></author><author><name sortKey="Wong, Chia Siong" sort="Wong, Chia Siong" uniqKey="Wong C" first="Chia Siong" last="Wong">Chia Siong Wong</name></author><author><name sortKey="Scott, Christopher" sort="Scott, Christopher" uniqKey="Scott C" first="Christopher" last="Scott">Christopher Scott</name></author><author><name sortKey="Stone, Jennifer" sort="Stone, Jennifer" uniqKey="Stone J" first="Jennifer" last="Stone">Jennifer Stone</name></author><author><name sortKey="Maskarinec, Gertraud" sort="Maskarinec, Gertraud" uniqKey="Maskarinec G" first="Gertraud" last="Maskarinec">Gertraud Maskarinec</name></author><author><name sortKey="Boyd, Norman F" sort="Boyd, Norman F" uniqKey="Boyd N" first="Norman F." last="Boyd">Norman F. Boyd</name></author><author><name sortKey="Van Gils, Carla H" sort="Van Gils, Carla H" uniqKey="Van Gils C" first="Carla H." last="Van Gils">Carla H. Van Gils</name></author><author><name sortKey="Tamimi, Rulla M" sort="Tamimi, Rulla M" uniqKey="Tamimi R" first="Rulla M." last="Tamimi">Rulla M. Tamimi</name></author></analytic><series><title level="j">JNCI Journal of the National Cancer Institute</title><idno type="ISSN">0027-8874</idno><idno type="eISSN">1460-2105</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background</title><p>Fibroglandular breast tissue appears dense on mammogram, whereas fat appears nondense. It is unclear whether absolute or percentage dense area more strongly predicts breast cancer risk and whether absolute nondense area is independently associated with risk.</p></sec><sec sec-type="methods"><title>Methods</title><p>We conducted a meta-analysis of 13 case–control studies providing results from logistic regressions for associations between one standard deviation (SD) increments in mammographic density phenotypes and breast cancer risk. We used random-effects models to calculate pooled odds ratios and 95% confidence intervals (CIs). All tests were two-sided with <italic>P</italic> less than .05 considered to be statistically significant.</p></sec><sec><title>Results</title><p>Among premenopausal women (n = 1776 case patients; n = 2834 control subjects), summary odds ratios were 1.37 (95% CI = 1.29 to 1.47) for absolute dense area, 0.78 (95% CI = 0.71 to 0.86) for absolute nondense area, and 1.52 (95% CI = 1.39 to 1.66) for percentage dense area when pooling estimates adjusted for age, body mass index, and parity. Corresponding odds ratios among postmenopausal women (n = 6643 case patients; n = 11187 control subjects) were 1.38 (95% CI = 1.31 to 1.44), 0.79 (95% CI = 0.73 to 0.85), and 1.53 (95% CI = 1.44 to 1.64). After additional adjustment for absolute dense area, associations between absolute nondense area and breast cancer became attenuated or null in several studies and summary odds ratios became 0.82 (95% CI = 0.71 to 0.94; <italic>P</italic><sub>heterogeneity</sub> = .02) for premenopausal and 0.85 (95% CI = 0.75 to 0.96; <italic>P</italic><sub>heterogeneity</sub> < .01) for postmenopausal women.</p></sec><sec><title>Conclusions</title><p>The results suggest that percentage dense area is a stronger breast cancer risk factor than absolute dense area. Absolute nondense area was inversely associated with breast cancer risk, but it is unclear whether the association is independent of absolute dense area.</p></sec></div></front></TEI><pmc article-type="review-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">J Natl Cancer Inst</journal-id><journal-id journal-id-type="iso-abbrev">J. Natl. Cancer Inst</journal-id><journal-id journal-id-type="hwp">jnci</journal-id><journal-id journal-id-type="publisher-id">jnci</journal-id><journal-title-group><journal-title>JNCI Journal of the National Cancer Institute</journal-title></journal-title-group><issn pub-type="ppub">0027-8874</issn><issn pub-type="epub">1460-2105</issn><publisher><publisher-name>Oxford University Press</publisher-name><publisher-loc>US</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">24816206</article-id><article-id pub-id-type="pmc">4568991</article-id><article-id pub-id-type="doi">10.1093/jnci/dju078</article-id><article-categories><subj-group subj-group-type="heading"><subject>Review</subject></subj-group></article-categories><title-group><article-title>Mammographic Density Phenotypes and Risk of Breast Cancer: A Meta-analysis</article-title></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name><surname>Pettersson</surname><given-names>Andreas</given-names></name></contrib><contrib contrib-type="author"><name><surname>Graff</surname><given-names>Rebecca E.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Ursin</surname><given-names>Giske</given-names></name></contrib><contrib contrib-type="author"><name><surname>dos Santos Silva</surname><given-names>Isabel</given-names></name></contrib><contrib contrib-type="author"><name><surname>McCormack</surname><given-names>Valerie</given-names></name></contrib><contrib contrib-type="author"><name><surname>Baglietto</surname><given-names>Laura</given-names></name></contrib><contrib contrib-type="author"><name><surname>Vachon</surname><given-names>Celine</given-names></name></contrib><contrib contrib-type="author"><name><surname>Bakker</surname><given-names>Marije F.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Giles</surname><given-names>Graham G.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Chia</surname><given-names>Kee Seng</given-names></name></contrib><contrib contrib-type="author"><name><surname>Czene</surname><given-names>Kamila</given-names></name></contrib><contrib contrib-type="author"><name><surname>Eriksson</surname><given-names>Louise</given-names></name></contrib><contrib contrib-type="author"><name><surname>Hall</surname><given-names>Per</given-names></name></contrib><contrib contrib-type="author"><name><surname>Hartman</surname><given-names>Mikael</given-names></name></contrib><contrib contrib-type="author"><name><surname>Warren</surname><given-names>Ruth M. L.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Hislop</surname><given-names>Greg</given-names></name></contrib><contrib contrib-type="author"><name><surname>Chiarelli</surname><given-names>Anna M.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Hopper</surname><given-names>John L.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Krishnan</surname><given-names>Kavitha</given-names></name></contrib><contrib contrib-type="author"><name><surname>Li</surname><given-names>Jingmei</given-names></name></contrib><contrib contrib-type="author"><name><surname>Li</surname><given-names>Qing</given-names></name></contrib><contrib contrib-type="author"><name><surname>Pagano</surname><given-names>Ian</given-names></name></contrib><contrib contrib-type="author"><name><surname>Rosner</surname><given-names>Bernard A.</given-names></name></contrib><contrib contrib-type="author"><name><surname>Wong</surname><given-names>Chia Siong</given-names></name></contrib><contrib contrib-type="author"><name><surname>Scott</surname><given-names>Christopher</given-names></name></contrib><contrib contrib-type="author"><name><surname>Stone</surname><given-names>Jennifer</given-names></name></contrib><contrib contrib-type="author"><name><surname>Maskarinec</surname><given-names>Gertraud</given-names></name></contrib><contrib contrib-type="author"><name><surname>Boyd</surname><given-names>Norman F.</given-names></name></contrib><contrib contrib-type="author"><name><surname>van Gils</surname><given-names>Carla H.</given-names></name></contrib><contrib contrib-type="author" corresp="yes"><name><surname>Tamimi</surname><given-names>Rulla M.</given-names></name></contrib><aff id="AF0001"><bold>Affiliations of authors:</bold><institution>Department of Epidemiology</institution> (AP, REG, RMT),<institution>and Department of Biostatistics</institution> (BAR),<institution>Harvard School of Public Health</institution>,<addr-line>Boston, MA</addr-line>;<institution>Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo</institution>,<addr-line>Oslo</addr-line>,<country>Norway</country> (GU);<institution>Department of Preventive Medicine, Keck School of Medicine, University of Southern California</institution>,<addr-line>Los Angeles, CA</addr-line> (GU);<institution>Department of Non-Communicable Disease Epidemiology, London School of Hygiene and Tropical Medicine</institution>,<addr-line>London, UK</addr-line> (IdSS);<institution>Section of Environment and Radiation, International Agency for Research on Cancer</institution>,<addr-line>Lyon</addr-line>,<country>France</country> (VM);<institution>Cancer Epidemiology Centre, Cancer Council Victoria</institution>,<addr-line>Melbourne</addr-line>,<country>Australia</country> (LB, GGG, KK);<institution>Centre for Molecular, Environmental, Genetic and Analytical Epidemiology, University of Melbourne</institution>,<addr-line>Melbourne</addr-line>,<country>Australia</country> (LB, GGG, JLH, KK, JS);<institution>Division of Epidemiology</institution> (CV)<institution>and Division of Biomedical Statistics and Informatics</institution> (CS),<institution>Department of Health Sciences Research, Mayo Clinic</institution>,<addr-line>Rochester, MN</addr-line>;<institution>Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht</institution>,<addr-line>Utrecht</addr-line>,<country>The Netherlands</country> (MFB, CHvG);<institution>Department of Epidemiology and Preventive Medicine, Monash University</institution>,<addr-line>Melbourne</addr-line>,<country>Australia</country> (GGG);<institution>Saw Swee Hock School of Public Health</institution> (KSC, MH, CSW),<institution>and Department of Surgery, Yong Loo Lin School of Medicine</institution> (MH),<institution>National University of Singapore, National University Health System</institution>,<addr-line>Singapore</addr-line>,<country>Singapore</country>;<institution>Department of Medical Epidemiology and Biostatistics, Karolinska Institutet</institution>,<addr-line>Stockholm</addr-line>,<country>Sweden</country> (KC, LE, PH, MH);<institution>Department of Radiology, Addenbrooke’s Hospital</institution>,<addr-line>Cambridge</addr-line>,<country>UK</country> (RMLW);<institution>School of Population and Public Health, University of British Columbia, Vancouver, BC , Canada (GH); Prevention and Cancer Control, Cancer Care, Toronto, ON, Canada (AMC); Human Genetics, Genome Institute of Singapore</institution>,<addr-line>Singapore</addr-line>,<country>Singapore</country> (JL);<institution>Campbell Family Institute for Breast Cancer Research, Ontario Cancer Institute</institution>,<addr-line>Toronto, ON</addr-line>,<country>Canada</country> (QL, NFB);<institution>University of Hawaii Cancer Center</institution>,<addr-line>Honolulu, HI</addr-line> (IP, GM);<institution>Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School</institution>,<addr-line>Boston, MA</addr-line> (BAR, RMT).</aff></contrib-group><author-notes><corresp id="c1"><bold>Correspondence to:</bold> Andreas Pettersson, MD, PhD, Department of Epidemiology, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115 (e-mail: <email>apetters@hsph.harvard.edu</email>) and Rulla M. Tamimi, ScD, Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, 181 Longwood Avenue, Boston, MA 02115 (e-mail: <email>rulla.tamimi@channing.harvard.edu</email>).</corresp></author-notes><pub-date pub-type="collection"><month>5</month><year>2014</year></pub-date><pub-date pub-type="epub"><day>10</day><month>5</month><year>2014</year></pub-date><pub-date pub-type="pmc-release"><day>1</day><month>5</month><year>2015</year></pub-date><pmc-comment> PMC Release delay is 12 months and
0 days and was based on the
<volume>106</volume><issue>5</issue><elocation-id>dju078</elocation-id><history><date date-type="received"><day>23</day><month>7</month><year>2013</year></date><date date-type="rev-recd"><day>3</day><month>2</month><year>2014</year></date><date date-type="accepted"><day>24</day><month>2</month><year>2014</year></date></history><permissions><copyright-statement>© The Author 2014. Published by Oxford University Press. All rights reserved. For Permissions, please e-mail: journals.permissions@oup.com.</copyright-statement><copyright-year>2014</copyright-year></permissions><related-article id="d35e435" related-article-type="companion" ext-link-type="doi" xlink:href="10.1093/jnci/dju109"></related-article><abstract><sec><title>Background</title><p>Fibroglandular breast tissue appears dense on mammogram, whereas fat appears nondense. It is unclear whether absolute or percentage dense area more strongly predicts breast cancer risk and whether absolute nondense area is independently associated with risk.</p></sec><sec sec-type="methods"><title>Methods</title><p>We conducted a meta-analysis of 13 case–control studies providing results from logistic regressions for associations between one standard deviation (SD) increments in mammographic density phenotypes and breast cancer risk. We used random-effects models to calculate pooled odds ratios and 95% confidence intervals (CIs). All tests were two-sided with <italic>P</italic> less than .05 considered to be statistically significant.</p></sec><sec><title>Results</title><p>Among premenopausal women (n = 1776 case patients; n = 2834 control subjects), summary odds ratios were 1.37 (95% CI = 1.29 to 1.47) for absolute dense area, 0.78 (95% CI = 0.71 to 0.86) for absolute nondense area, and 1.52 (95% CI = 1.39 to 1.66) for percentage dense area when pooling estimates adjusted for age, body mass index, and parity. Corresponding odds ratios among postmenopausal women (n = 6643 case patients; n = 11187 control subjects) were 1.38 (95% CI = 1.31 to 1.44), 0.79 (95% CI = 0.73 to 0.85), and 1.53 (95% CI = 1.44 to 1.64). After additional adjustment for absolute dense area, associations between absolute nondense area and breast cancer became attenuated or null in several studies and summary odds ratios became 0.82 (95% CI = 0.71 to 0.94; <italic>P</italic><sub>heterogeneity</sub> = .02) for premenopausal and 0.85 (95% CI = 0.75 to 0.96; <italic>P</italic><sub>heterogeneity</sub> < .01) for postmenopausal women.</p></sec><sec><title>Conclusions</title><p>The results suggest that percentage dense area is a stronger breast cancer risk factor than absolute dense area. Absolute nondense area was inversely associated with breast cancer risk, but it is unclear whether the association is independent of absolute dense area.</p></sec></abstract><counts><page-count count="11"></page-count></counts></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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