Breast cancer in four year-old girl extremely rare occurrence October 20, 2010Dr. Barry Dworkin Madely Health Headlines Commentary for October 20, 2010 [display_podcast] Source: Four-year-old Ontario girl surviving breast cancer Related posts: More genes linked to breast cancer risk Results of preventive breast and ovarian cancer surgeries for BRCA gene carriers published Mental health service breakdown at CHEO Discovery of breast cancer subtypes may lead to improved treatment breast cancerchildren