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Beyonce and her sister Solange Knowles got tested for a mutated gene called a BRCA2 gene after their dad Mathew Knowles was diagnosed with breast cancer.

The former Destiny's Child manager revealed his frightening diagnosis in an interview with Good Morning America that aired on Wednesday, Oct. 2, the second day of Breast Cancer Awareness month.

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In his chat with Michael Strahan, Mathew, 67, revealed that the first call he made when he learned of his health battle was to his famous daughters - because they are at high risk to be carriers of the same gene.

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"The first call was to my family, because this is genetics," said Mathew, pictured with daughter Solange. "It means that my kids have a higher chance, a higher risk (of getting cancer), even my grandkids have a higher risk, and they handled it like they should - they went and got the test," Mathew explained. He didn't reveal the results of the tests.

Everyone is born with BRCA genes that help to suppress cancerous tumors. But Mathew's gene has a mutation on it that led to his breast cancer diagnosis.

He added that after being told he had breast cancer, he was warned that he might be diagnosed with prostate cancer, pancreatic cancer or melanoma later on. He will continue to have regular mammograms and other examinations to ensure he is free from the disease.

Mathew is a father of at least seven children - five of his children were fathered outside of his marriage to Beyonce's mother, Tina Knowles, who filed for divorce and is now happily married to retired actor Richard Lawson.

Mathew fathered two young children with current spouse Gena Avery whom he married in 2013. He also has a son, Nixon, with Alexsandra Wright and a daughter with TaQoya Branscomb. And there is widespread belief that he is the biological father of Destiny's Child original member Kelly Rowland.

Mathew told Strahan he had his breast removed to prevent the cancer from spreading to his lymph nodes.

"I'm doing really well. I had my surgery the last week of July and now I'm going through all the steps for recovery."

So far, Beyonce has not commented on her father's diagnosis.
 

Gary Friedman/LA Times via Getty Images

Beyonce's dad, Mathew Knowles, revealed he is battling breast cancer. Knowles, 67, revealed his cancer diagnosis in an interview with "Good Morning America" that's set to air on Wednesday, Oct. 2.

Knowles, who is the former manager of Destiny’s Child, sat down with Michael Strahan to discuss his diagnosis, his treatment and the implications for his family.

Breast cancer is rare in males. According to the National Breast Cancer Foundation, only 1 in 1,000 males are diagnosed with breast cancer.

Breast cancer usually occurs in males who have inherited a mutation on the BRCA genes that suppresses cancerous tumors.

Not all breast tumors are cancerous. Noncancerous breast tumors are called benign tumors or fibrocystic breasts.

The most common type of breast cancer in males is called infiltrating ductal carcinoma, which means invasive cancer in the ducts near the nipples.

Symptoms

Signs and symptoms of breast cancer include:

  • A painless lump or thickening in your breast tissue
  • Skin changes on your breast, such as dimpling, puckering, redness
  • Changes to your nipple, such as redness or scaling
  • A nipple that begins to turn inward
  • Discharge from your nipple
  • If you have any of the signs and symptoms, notify your doctor or healthcare provider immediately for an evaluation.

    If not caught early breast cancer may invade the nearby lymph nodes and spread rapidly around the body (metastatic cancer).

    Diagnosis

    Diagnosis of breast cancer is made after an abnormality of the breast is found. Diagnostic tests include mammography, ultrasound, and a biopsy of part or all of the mass for further analysis under a microscope.

    The doctor performs a biopsy of the breast tumor and/or the lymph nodes with a needle and a local anesthetic. Sometimes the biopsy requires more than a fine needle. An incision is made and more of the mass is removed for testing.

    Treatment for male breast cancer depends on the size of the tumor and other factors such as cancer staging (1-4), the general health of the patient and the patient's age.

    Treatment

    Treatment includes chemotherapy, radiation, hormones (Estrogen) and surgery to remove the tumor. Treatment is individualized for every patient.

    This has been your Medical Minute.
     

    More Info On the Web

    What Is Breast Cancer in Men? - Cancer.org

    Male breast cancer, Symptoms and Causes - Mayo Clinic

    Male Breast Cancer Treatment - Cancer.gov
     

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