Repeat the procedure on the left breast. These health-care professionals reviewed the same studies as the other groups, but decided that mammograms are an option until age 50. Follow a little of each set of recommendations, and add in a personal touch. If you have a family history of breast cancer, you should begin getting regular mammograms in your 30s or earlier, based on your doctor's advice. My breasts are naturally lumpy.
All new lumps are cause for concern.
If a lump persists, see your doctor. So don't let fear of exposure to radiation keep you from getting regular mammograms. Doctors used to think that large breasts might be more prone to developing malignant tumors, but that idea has never been proven by research. Being overweight, however, does increase your risk, and when you're overweight you tend to have larger breasts. No, a bruise or hit to the breast won't cause cancer.