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Insurance companies denying some additional breast cancer screenings

Millions of American women are at high risk for breast cancer but many insurances don’t cover the costs of follow-up screenings needed to detect the disease. Typically, the companies cover one annual mammogram for women over 40, but these screenings can miss cancers, especially when a woman has dense breast tissue. NBC News’ Stephanie Gosk looks at why many women faced with out-of-pocket costs for add-on screenings like ultrasounds end up not getting the tests.