Because of that family history, I chose to get my first baseline
mammogram at age 35, and have gotten 2 since then. They have been normal, but
on my recent mammogram report, it was noted that I have dense heterogenous breasts. After researching it a bit, I found that it is not necessarily uncommon for women under 50 to have dense heterogenous breasts, but it was suggested that women with average to high risk for breast cancer have an ultrasound once a year in addition to a normal mammogram.