Under my arm I have a growth... about the size of a golf ball a bit larger... went to clinic and got mamogram but didn't show so its just under my arm they didn't suggest any kind of dr. or referral of any kind... maybe not having ins. Didn't help with their volunteering info... also I noticed the lump came after I was done having children and stopped nursing... but over years getting larger... mid fifties now... dont know if age has anything to do with it... thanks for any input.. dont know what to do if anything