Student diagnosed with breast cancer at age 18 FOX 4 News Dallas-Fort Worth Good Day Published October 25, 2018 11:08 AM CDT Share Copy Link Email Facebook Twitter LinkedIn Reddit Published October 25, 2018 11:08 AM CDT DALLAS - Breast cancer can affect people of any age but it is unusual in young people. One local college student was diagnosed at 18. Sierra Galvez's doctors were surprised but prepared thanks to Komen Dallas County.