In this Monday, Feb. 25, 2013 photo, Dr. Rebecca Johnson, a cancer specialist at Seattle Children's Hospital, poses in an exam room at the hospital in Seattle. Johnson is the lead autho

 

              In this Monday, Feb. 25, 2013 photo, Dr. Rebecca Johnson, a cancer specialist at Seattle Children
In this Monday, Feb. 25, 2013 photo, Dr. Rebecca Johnson, a cancer specialist at Seattle Children's Hospital, poses in an exam room at the hospital in Seattle. Johnson is the lead author of a new study that shows that advanced breast cancer cases have increased slightly among young women, a 34-year analysis suggests, raising many questions about possible reasons even as the disease remains uncommon in women younger than 40. Johnson herself was diagnosed with early-stage breast cancer at age 27, 17 years ago. Unlike women in the study, Johnson’s cancer was caught early. (AP Photo/Elaine Thompson)