Secretary of State Robin Carnahan says she plans to keep coming to the office as she receives treatment to battle breast cancer. Carnahan says chemotherapy should begin this week, with surgery and radiation treatment scheduled for this summer. Carnahan wants to keep up with the work in her office. Carnahan says her doctors have given her an excellent chance for recovery, because she caught it early and she is in good shape. Carnahan says she hopes her battle will sound a warning for other women. Carnahan says she discovered a lump in her breast, which prompted a visit to the doctor and led to the diagnosis. She says the lump didn’t even show up on a mamogram, but was revealed through an ultrasound. Carnahan says she hopes the publicity surrounding her struggle will prompt women to conduct their own self-examinations.