Where is mammary gland

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Circulatory Medically reviewed by the Healthline Medical Network. Functionally, the mammary glands produce milk; structurally, they are modified sweat glands.

Mammary glands, which are located in the breast overlying the pectoralis major muscles, are present in both sexes, but usually are functional only in the female.

Externally, each breast has a raised nipple , which is surrounded by a circular pigmented area called the areola. The nipples are sensitive to touch, due to the fact that they contain smooth muscle that contracts and causes them to become erect in response to stimulation. Internally, the adult female breast contains 15 to 20 lobes of glandular tissue that radiate around the nipple.

The lobes are separated by connective tissue and adipose. A mammogram may be recommended to identify a lump that you or your healthcare provider have detected in your breast. They are also used as a screening tool to detect breast cancer. The American College of Obstetriciansand Gynecologists recommends that women at average risk of breast cancer get a mammogram every one to two years beginning at age 40, and no later than 50; screening should continue until at least age 75 years.

Biopsies of the breast may be done when a small sample is required for laboratory testing. Needle biopsies are done by inserting a needle into the breast to extract fluid or cells known as fine needle aspiration , or by using a larger, hollow needle to extract small amounts of tissue samples known as core needle biopsy.

Sometimes ultrasound or MRI is used for guidance. If a larger section of tissue or mass needs to be removed or assessed, a surgical biopsy, also known as an incisional biopsy, might be recommended. Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life.

Cleveland Clinic. Breast anatomy: Breast cancer, breastfeeding, conditions. National Cancer Institute. Mammary glands. Khan Y, Sajjad H. Anatomy, thorax, mammary gland. Updated July 31, American Cancer Society. How common is breast cancer?

Updated January 8, Breast cancer risk in transgender people receiving hormone treatment: nationwide cohort study in the Netherlands. ACS breast cancer early detection recommendations. Centers for Disease Control and Prevention. What is breast cancer screening?

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