New Left Breast Thickening in 67F • Xray of the Week 2017 • Week #4 This 67 year old asymptomatic woman was called back from mammography screening for assessment of the finding detected on the mammograms of her left breast. In addition, there was a slight palpable thickening in the lateral portion of the left breast at clinical breast examination. What two processes are present? Figure 1. a-d. Mediolateral (a,b) and craniocaudal (c,d) mammograms of the previous screening exam