1985
DOI: 10.1259/0007-1285-58-685-21
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Factors associated with mammographic pattern

Abstract: Wolfe's criteria were assigned to mammograms of 202 women without breast cancer. Parity decreased the frequency of P2 patterns but not DY. P1 and N1 patterns apparently increased at the expense of P2 patterns. For every birth, the probability that a P2 pattern changed to P1 or N1 was roughly 7 or 8%. This effect was not limited to the first pregnancy, but also held for additional pregnancies. Low body weight was associated with dysplasia and prominent duct patterns. Reported declines of radiographic density wi… Show more

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Cited by 67 publications
(42 citation statements)
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“…Other studies have reported a relationship between body weight and mammographic parenchymal pattern similar to our own (Brisson et al, 1984;de Waard et al, 1984;Grove et al, 1985;De Stavola et al, 1990;Boyd et al, 1995Boyd et al, , 1998Salminen et al, 1998). Boyd et al (1998) found that, in premenopausal women, weight and BMI were negatively correlated with the area of dense tissue.…”
Section: Discussionsupporting
confidence: 87%
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“…Other studies have reported a relationship between body weight and mammographic parenchymal pattern similar to our own (Brisson et al, 1984;de Waard et al, 1984;Grove et al, 1985;De Stavola et al, 1990;Boyd et al, 1995Boyd et al, , 1998Salminen et al, 1998). Boyd et al (1998) found that, in premenopausal women, weight and BMI were negatively correlated with the area of dense tissue.…”
Section: Discussionsupporting
confidence: 87%
“…Several studies have shown that increased body weight and body mass index (BMI) are associated with a significant reduction in the percentage of women having a P2 or DY (P2/DY) pattern (Brisson et al, 1984;de Waard et al, 1984;Grove et al, 1985;De Stavola et al, 1990;Boyd et al, 1995Boyd et al, , 1998Salminen et al, 1998). However, overweight women have an elevated risk of developing post-menopausal breast cancer (Tornberg et al, 1988;van den Brandt et al, 1997).…”
mentioning
confidence: 99%
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“…Further, similar factors influence mammographic densities, and the hormones and growth factors found here to be associated with them. Breast density decreases with increasing age, after pregnancy, and at the menopause (Brisson et al, 1982;de Waard et al, 1984;Grove et al, 1985;Byrne et al, 1995). Blood levels of growth hormone, IGF-I and prolactin also decline with increasing age (Hall et al, 1999).…”
Section: Discussionmentioning
confidence: 99%
“…5 The authors describe their 1.3% APC as central to other estimates (ranging from 0.8% to 2.3%) that they list in a table captioned "Temporal Trends Prior to Mammographic Screening," and they specifically justify it as consistent with the "4-decade historic Connecticut Tumor Registry trend of 1.2%" from 1940 to 1982. All 9 of the APCs for women in the table, however, include early years of national screening in the late 1970s and early 1980s, 3,[6][7][8][9] and this is apparent from the >2-fold higher APCs for the screened age groups versus younger unscreened women.…”
mentioning
confidence: 99%