The study compared breast cancer survivors who became pregnant with those who did not become pregnant over an average period of 7 years. The study tracked the recurrence rate of breast cancer and found that those who became pregnant did not experience a greater rate of recurrence, even in cases of ER positive breast cancer.
‘Pregnancy does not increase recurrence rate of breast cancer in women with previous history of breast cancer.’
These findings show that pregnancy does not increase the risk of breast cancer recurrence, alleviating fears that pregnancy poses a greater risk to breast cancer survivors. The study notes that fears among physicians and patients may be a factor in the high rate of abortion among women who have a history of breast cancer.