[img=left]http://d.yimg.com/us.yimg.com/p/ap/20080324/capt.8846c3870e984d3f927c30af778a154c.healthbeat_cancer_costs_wx101.jpg?x=130&y=86&q=85&sig=9fOCM4Hxl8T3jkUy8SVgDQ--[/img]AP - You've just been diagnosed with cancer, and the doctor is discussing treatment options. Should the cost be a deciding factor? Chemotherapy costs are rising so dramatically that later this year, oncologists will get their first guidelines on how to have a straight talk with patients about the affordability of treatment choices, a topic too often sidestepped.