Again radiation therapy for prostate cancer in the spotlight. There seems to be an increased risk for developing bladder cancer and rectal cancer after radiation therapy. Keep in mind though, that it is also feasible that the risk factors for prostate cancer may also be risk factors for the other cancers. However, keep in mind that radiation is ionizing energy, which is known to cause cancer.
http://www.modernmedicine.com/modernmedicine/article/articleDetail.jsp?id=548549
