Poor countries see troubling rise in breast cancer

Breast cancer long has been considered a cancer mostly of wealthier countries. Indeed, about 192,000 new cases are expected in the U.S. this year, where long-term survival is high thanks in part to good screening.

The true prevalence in most developing countries is unknown because of poor diagnosis and bad record-keeping. But new Harvard research estimates they'll be home to 55 percent of the world's 450,000 expected breast cancer deaths this year.