question: I am a 56 year old female and recently (couple days ago) noticed a hard, painless, non-moveable, marble sized lump on the right side of my collarbone. I walk daily and exercise using one and two pound weights and bicycle. No history of major illness or cancer. No other noticeable symptoms. General good health. Non-smoker. No health insurance. Any ideas what this could be and what I may do at home?