Tina Knowles opens up about breast cancer diagnosis CNN 0 124 04.23 02:39 https://www.youtube.com/watch?v=YBTKBZUZbKg + 27 https://www.youtube.com/feeds/videos.xml?channel_id=UCupvZG-5ko_eiXAup… + 17 Tina Knowles opens up about breast cancer diagnosis