In 2008, breast cancer caused more than 458,000 deaths worldwide (13.7% of cancer deaths in women). Survival rates in the Western world are high; for example, 84% of women in England diagnosed with breast cancer survive for at least 5 years. In developing countries, survival rates are much poorer although the incidence rates in many developing countries are much lower than in the US.
The USA has the highest incidence of breast cancer in the world. In twelve world regions, the incidence rates per 100,000 women are as follows: in Eastern Asia, 18; South Central Asia, 22; sub-Saharan Africa, 22; South-Eastern Asia, 26; North Africa and Western Asia, 28; South and Central America, 42; Eastern Europe, 49; Southern Europe, 56; Northern Europe, 73; Oceania, 74; Western Europe, 78; and in North America, 90. As you see, the rates in The US are more than four times higher than in other areas of the world, although one wonders about proper reporting from the developing world.