Extract of my guest post at maiBlog, a radiology-focused blog.
"The increasing ranks of cancer survivors have brought new concerns into focus—second primary cancers now account for 18% of all cancer diagnosis and are the third most common cancer diagnosis in US. ... Radiotherapy, while a highly effective cancer treatment option, has long been considered to increase the risk of subsequent cancers, but convincing data had been lacking. Now, an epidemiological study published by the National Cancer Institute in the April 2011 issue of Lancet Oncology journal shows that 92% of all second cancers are due to causes other than the radiation treatment of previous cancer. ..."