My father is already 60 years, less than 3 weeks ago a lump appear under his left nipple. the lump is quite big and has not been diagnosed yet in short he hasn't seen a docter yet since the lump appeared.the lump is quite painful when touched but no discharge coming out of the nipple. it is not red or swollen and has no burning feeling in the lump. My father oftenly drink beers and hard drinks and used to eat fatty foods. he also has arthritis and is taking medication for it and pain reliever such as voltaren 50 or 100 mg.when it is painful. Does this also affect the lump or can this be the reason why a lump appeared under his nipple. i to know about this. thanks in advance.