Virtually zero: With very rare exceptions breast cancer occurs in women older than 30 years and usually older than that. See this site for more information on the subject. http://www.ncbi.nlm.nih.gov/pubmedhealth/pmh0001911/.
Answered 3/31/2013
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Low: While not impossible, it would be very rare.
Answered 9/28/2016
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Near zero: Only a rare inheritable form could develop on such a patient and even their this would be very early. Most any new change or lump in the breast would be related to hormonal changes or infection or something benign.
Answered 4/13/2013
5.2k views
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