Breast Cancer Facts – Source: The Hartford Courant, October , Number of American women and men estimated to be diagnosed with new cases of invasive breast cancer in , including , women. Excluding skin cancers, breast cancer is the most frequently diagnosed cancer in women. The State Cancer Profiles web site provides a variety of cancer and cancer-related statistics for Connecticut. Data are available as tables and maps, and include: cancer incidence and mortality rates; trend data; and supporting demographic and risk factor data. Click here to go to the State Cancer Profiles web site. Breast cancer is cancer that forms in the cells of the breasts. After skin cancer, breast cancer is the most common cancer diagnosed in women in the United States. Breast cancer can occur in both men and women, but it's far more common in women. Substantial support for breast cancer awareness and.