Yes, but not with perfect regularity.
That point (from balagan_imma) rings true with what I heard from an oncologist last month. My primary care physician referred me to an oncologist to talk about my risk of breast cancer, and about lowering my risk FOR breast cancer, given my family history.
The oncologist spent an hour reviewing my history, talking to me about various options, and assessing the options as they relate to me given my estimated risk.
He did comment about breast self-exams, saying that mammograms detect issues long before they can be identified in a self-exam, or felt in a clinical breast exam, as lumps. He mentioned that the only people who have been referred to him because of lumps they directly felt weren't receiving other screening (or it would have been detected earlier.) He wasn't discouraging self-exam but pointing out that someone who is getting annual mammo's will learn about any issues there, first.
at 11:20 PM on Jan. 4, 2013