· mom to beyoncé, 43, and solange, 38, knowles , 71, was blindsided last july when she says doctors discovered stage 1 breast cancer in her left breast. · beyoncés mother, tina knowles , has shared an update on her health after revealing her breast cancer diagnosis last month in her new memoir. · tina knowles, the mother of pop and r&b stars beyoncé and solange, recently revealed she was diagnosed in 2024 with stage 1a breast cancer after missing her regular mammogram appointment. In an interview with people, knowles revealed she was diagnosed with stage 1 breast cancer in her left breast last july. · the 71-year-old said she was diagnosed with stage 1 breast cancer in her left breast after doctors discovered two tumors during a delayed mammogram appointment. · the matriarch, who is mom to beyoncé and solange knowles , recently shared she received treatment for breast cancer. · tina knowles wants women to stay on top of their mammogram appointments. I was diagnosed with breast cancer in my left breast, knowles told. · also, businesswoman and supermom tina knowles is normally fiercely private, but she opens up about her personal battle with breast cancer to inspire other women fighting the disease.