Joni, I've never heard of this type of vibration you describe as being a sign of breast cancer. Only your doctor can make this determination -- and any diagnoses -- for sure. Breast cancer isn't usually something you "feel" - except that you may feel a lump. Other than that (and unless it's inflammatory breast cancer, which is painful and hot), it doesn't feel like anything. If it continues to bother you, by all means get it checked out; being on the left side, maybe it has more to do with your heart than your breast? But whatever, to set your mind at ease - make an appointment to see your doc, OK? Good luck - PJH

You should talk to your doctor about whether the vibration is a possible symptom of cancer. To prepare for this conversation, I just wanted to throw out there that if you have had a mastectomy, or breast surgery, the pains and odd feelings you may be getting could be what I was told were "phantom pains."

When I went through my first mastectomy, it took a long time before those cut nerve endings calmed down, and I would often tingle in my chest area, even though I had no breast.

I've also been told that at some point I could get some feeling back after all my surgeries.  One reconstruction surgery had my nerves tingling for weeks.

Just a thought because you hadn't said if you had underwent a breast surgery recently or in the past.

I don't know if I was able to help much, but I know the feeling - and I hope for your sake it's something as simple as nerve tingling and nothing major! Check in with your doctor, as only he or she can tell you for sure.

I am experiencing the same thing!!! please post here if you get any insight.