Beyonce's father announced the revelation that he is fighting breast cancer in an interview that aired this morning.
Mathew Knowles revealed the news on Good Morning America this morning in an interview with Michael Strahan.
The 67-year-old broke the news on the first day of Breast Cancer Awareness month that runs throughout October.
Breast cancer in men is extremely rare. More than 99 per cent of breast cancer cases are diagnosed in women and the odds that a man gets breast cancer are 1000 to one.
In an interview teaser, Knowles is asked how he broke the sad news to his daughters.