Hi, dear I have gone through your question. I can understand your concern. You have lump in your breast. Your kidney disease and stomach problems has no relation with your breast lump. Your breast lump can be due to fibroadenoma, fibrocystic disease, fibroadenosis or rarely breast cancer. Chances of cancer is very rare at your age. You have benign breast disease most likely. You should go for fine needle aspiration cytology and mammography of that lump. It will give you exact diagnosis. Then you should take treatment accordingly. Hope I have answered your question, if you have doubt then I will be happy to answer. Thanks for using health care magic. Wish you a very good health.