Gravelle I H, Bulstrode J C, Wang D Y, Bulbrook R D, Hayward J L
Br J Radiol. 1980 Feb;53(626):107-13. doi: 10.1259/0007-1285-53-626-107.
Mammograms were obtained from 942 normal women aged over 30 years, and were classified by Wolfe's criteria. In women with an enhanced risk of breast cancer associated with a late age at first child or nulliparity, there was a significant increase in the proportion of P2 and DY mammographic patterns which are thought to be a radiological index of risk. There was a decrease in the proportion of P2 and DY grades in women using steroidal contraceptives. However, the association between radiological and epidemiological determinants of risk did not hold for age at menarche.
对942名30岁以上的正常女性进行了乳房X光检查，并根据沃尔夫标准进行分类。在因初产年龄晚或未生育而患乳腺癌风险增加的女性中，被认为是风险放射学指标的P2和DY乳房X光检查模式的比例显著增加。使用甾体避孕药的女性中，P2和DY等级的比例有所下降。然而，月经初潮年龄在风险的放射学和流行病学决定因素之间不存在关联。
