
Hayek is the first Mexican national to be nominated for an Academy Award for Best Actress. She is one of the most prominent Mexican figures in Hollywood since silent film actress Dolores del Rio. She is also, after Fernanda Montenegro, the second of three Latin American actresses (the other being Catalina Sandino Moreno) to achieve a Best Actress Oscar nomination.
Limitations of mammograms
A mammogram cannot prove that an abnormal area is cancer. To confirm whether cancer is present, a small amount of tissue must be removed and looked at under a microscope. This procedure, called a biopsy, is described in the section "How is breast cancer diagnosed?"
You should also be aware that mammograms are done to find breast cancer that cannot be felt. If you have a breast lump, you should have it checked by your doctor and consider having it biopsied even if your mammogram result is normal.
For some women, such as those with breast implants, additional pictures may be needed. Breast implants make it harder to see breast tissue on standard mammograms, but additional x-ray pictures with implant displacement and compression views can be used to more completely examine the breast tissue.
Mammograms are not perfect at finding breast cancer. They do not work as well in younger women, usually because their breasts are dense, and can hide a tumor. This may also be true for pregnant women and women who are breast-feeding. Since most breast cancers occur in older women, this is usually not a major concern.
However, this can be a problem for young women who are at high risk for breast cancer (due to gene mutations, a strong family history of breast cancer, or other factors) because they often develop breast cancer at a younger age. For this reason, the American Cancer Society now recommends MRI scans in addition to mammograms for screening in these women.