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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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