The report notes that the most common cancers vary between the developed and less developed world. In developed countries, breast, colorectal and lung cancer are the most common forms of the disease in women. While breast cancer is still number one in the less developed world, it is followed by cervical and stomach cancer. Among men, prostate, lung and colorectal cancers are most common in the developed world. In the less developed world, the most common cancers are of the stomach, lungs and liver.