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  • Title: Is there a link between breast cancer and abortion: a review of the literature.
    Author: Kitchen AJ, Trivedi P, Ng D, Mokbel K.
    Journal: Int J Fertil Womens Med; 2005; 50(6):267-71. PubMed ID: 16526417.
    Abstract:
    The hormonal changes that take place in pregnancy cause breast tissue to proliferate and differentiate. Abortion interrupts this process and may leave the proliferated, undifferentiated breast tissue at higher risk of carcinogenesis. This review explains the supposed difference in effects of induced and spontaneous abortion upon the breast tissue and examines the literature for a link with breast cancer. Additional subcategories examined include parity, number of abortions, gestation, and maternal age at abortion. A comparison of retrospective and prospective studies is made and possible sources of bias are identified. There is no evidence to support a link between spontaneous abortion and breast cancer. Absence of a link with induced abortion is less clear, and further research should concentrate on investigating any relationship. We suggest that prospective research is used, with point of entry at first termination.
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