MONDAY, May 5 (HealthDay News) -- In women who have been diagnosed with breast cancer, having a known mutation in the BRCA 1 or 2 genes raises the risk of a second cancer, and many of these women choose to have their second breast removed before that has a chance to happen.
However, new research suggests that women who don't have these genetic mutations may still face an increased risk of a second cancer, especially if they have a family history of breast cancer or atypical breast cells.