Question: my 57yr old mum had what she thought was a pimple on her chest a few months ago that was very irratting and took awhile to get rid off, she has now noticed a small pea size hard lump where what we thought was a pimple was. what are the chances this lump could be cancer or is it more then likely a cysist. please help. she is very worried. breast cancer does not run in the family.

thank you, ur answer has helped. on a separate note. my mother has also chronic knee problems. she has had 4 reconstructions, the illazarra (not sure on spelling)frame(big cage thing with pins that went in the knee that we tightened regularly), other ops to remove floating bone, and she has also had 2 knee replacements within two years of each other as the first got a infection so had to be removed after only 6 months were she was left without a knee for 8mths, with only what they called a block in its place to kill the infection and until the 2nd replacement. the 2nd replacement has not worked at all from day dot. this has been all over the past 15-18yrs, all on the 1 knee. the last replacement/op was done about 9yrs ago, and the docs are still trying to figure out what the next option is as they wont do another replacement. she is in constant pain, and is on every pain medication avail. and now has arthritis in her back and wrist from long term crutches, and the other knee is getting bad now from taking all the weight. in the last 2 months we have had to put her in a wheel chair as she can no longer walk. what option would u suggest next for her. amputation or fusing has been mention, but they reluctant to do either. can they try another replacement? we are at a dead end. she cant take the pain anymore. she just wants a result, please help,

MRI was done on this knee a few times over the years. the last MRI which was about 2yrs ago, findings were absolute nothing. they could not find anything wrong with the replacement it self, there were no signs of any infection. everything looked just fine. which confused everyone. they honestly have not been able to offer a reason or explanation on why she cant bend her leg more then 10 degrees since the op. and whats causing so much pain. 1 suggestion was that her body is just rejecting the metal, so they thought of trying some sort of bone knee replacement???? but that went no further as they don't want to operate again. i also forgot to mention that every now and then her knee will become burning hot to touch, with a red like patchy rash of the knee and partly down her leg. have informed specialist of this thinking it could b signs of infection, but nothing has showed up in any of the test. and once again, they cant give us a explanation on y or what is happening. they picked up the first ever infection after the first replacement with no problems at all. i thought maybe they hadn't killed it all properly when they put the 2nd in and that could b what the problem is?? the only reason the first was removed was solely because of infection, no other reasons or problems had occurred.