No: Many invasive breast cancers are identified by radiologic means(mammogram/mri) without any physically visible or even palpable masses/lumps, which is why mammograms are very important for screening.
Answered 9/16/2013
4.9k views
No.: In fact, the majority of breast cancers in the us are found without a visible lump. Obviously, a visible lump needs to be evaluated, regardless.
Answered 3/24/2015
4.9k views
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