What Beyonce’s Dad Discovered on Shirt Before Breast Cancer Diagnosis

Matthew Knowles says he has been diagnosed with breast cancer, and now Beyonce is being tested to determine whether she carries the breast cancer gene. The 67-year-old family patriarch opened up about his illness to “Good Morning America” co-anchor Michael Strahan Tuesday morning. "I went to my doctor, got a mammogram and it became very clear that I had breast cancer,” he said. One of the first things he did was call his famous daughters, Beyonce and Solange, since the disease is genetic.