SSM Health Breast Health at St. Joseph - Lake Saint Louis offers low-dose, 3-D mammography, digital mammography, breast ultrasounds, ultrasound guided breast biopsies and walk-in, same-day mammograms. We also offer support groups as well as a Cancer Information Center for education about breast cancer and other conditions. Nurse navigators will help you through the diagnostic evaluation and provide education and support throughout diagnosis, treatment and survivorship.