your mammogram shows that your breast tissue is dense. dense breast tissue is common and is not abnormal. however,dense breast tissue can make it harder to evaluate the results of your mammogram and may also be associated with an increased risk of breast cancer. this information about the results of your mammogram is given to you to raise your awareness and to inform your conversations with your doctor. together, you can decide which screening options are right for you. a report of your results was sent to your physician.