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Mammographic Densit...
Mammographic Density Changes over Time and Breast Cancer Risk : A Systematic Review and Meta-Analysis
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- Mokhtary, Arezo (author)
- Örebro Univ, Sch Med Sci, Fac Med & Hlth, S-70182 Örebro, Sweden.,Faculty of Medicine and Health, School of Medical Sciences, Örebro University, Örebro, Sweden
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- Karakatsanis, Andreas (author)
- Uppsala universitet,Endokrinkirurgi,Department of Surgical Sciences, Uppsala University, Uppsala, Sweden
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- Valachis, Antonis, 1984- (author)
- Örebro universitet,Institutionen för medicinska vetenskaper,Region Örebro län,Department of Oncology,Örebro Univ, Fac Med & Hlth, Dept Oncol, S-70182 Örebro, Sweden.
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Örebro Univ, Sch Med Sci, Fac Med & Hlth, S-70182 Örebro, Sweden Faculty of Medicine and Health, School of Medical Sciences, Örebro University, Örebro, Sweden (creator_code:org_t)
- 2021-09-25
- 2021
- English.
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In: Cancers. - : MDPI. - 2072-6694. ; 13:19
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Abstract
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- Simple Summary Although mammographic density is strongly linked to the risk of breast cancer, research on the relationship between changes in density over time and the risk of breast cancer has shown conflicting results. We found in the present meta-analysis that increased breast density over time was associated with higher breast cancer risk whereas decreased breast density might be associated with lower breast cancer risk. The results of the meta-analysis constitute a potential opportunity for more individualized screening strategies based on the evolution of breast density during mammography screening. The aim of this meta-analysis was to evaluate the association between mammographic density changes over time and the risk of breast cancer. We performed a systematic literature review based on the PubMed and ISI Web of Knowledge databases. A meta-analysis was conducted by computing extracted hazard ratios (HRs) and 95% confidence intervals (CIs) for cohort studies or odds ratios (ORs) and 95% confidence interval using inverse variance method. Of the nine studies included, five were cohort studies that used HR as a measurement type for their statistical analysis and four were case-control or cohort studies that used OR as a measurement type. Increased breast density over time in cohort studies was associated with higher breast cancer risk (HR: 1.61; 95% CI: 1.33-1.96) whereas decreased breast density over time was associated with lower breast cancer risk (HR: 0.78; 95% CI: 0.71-0.87). Similarly, increased breast density over time was associated with higher breast cancer risk in studies presented ORs (pooled OR: 1.85; 95% CI: 1.29-2.65). Our findings imply that an increase in breast density over time seems to be linked to an increased risk of breast cancer, whereas a decrease in breast density over time seems to be linked to a lower risk of breast cancer.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Folkhälsovetenskap, global hälsa, socialmedicin och epidemiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Public Health, Global Health, Social Medicine and Epidemiology (hsv//eng)
Keyword
- breast cancer risk
- breast density
- mammography
- meta-analysis
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