Certain chemotherapy drugs may have greater risk than others, says Dr. Lewis Silverman, the director of Myelodysplastic Syndrome Center at Mount Sinai School of Medicine. But while the risk may lead doctors to adjust treatment, it doesn’t necessarily lead them to abandon treatment altogether. “As an oncologist, if you’re looking at a patient with breast cancer, and you know that without treatment, there’s a 40 percent change that the tumor can recur, and when it recurs, and it has spread, the ability to cure the disease at that time is much more limited,” says Silverman. “In the scheme of things, it’s a small consideration compared to the treatment to cure somebody when they have early-stage disease.”

Article source: http://www.thedailybeast.com/articles/2012/06/12/how-robin-roberts-breast-cancer-treatment-could-cause-more-cancer.html