Anatomy Of Breast Cancer
Breast is the common site of the cancer and other pathological conditions like inflammation and abscess formation in women. Nearly all lymphatics of the breast drain along a subdermal plane into the axillae typically collecting in a single sentinel lymph node at the lateral border of the pectoralis major muscle.
Where does breast cancer originate.
Anatomy of breast cancer. In less-developed countries it is the leading cause of cancer death in women. Breast tissue can develop anywhere along the milk line. Specifically most breast cancer is thought to originate in the terminal ductal lobular unit TDLU.
Breast cancer can begin in any of these parts of the breast. Pectoralis major partially on the front of ridgeshaped muscle m. Benign noncancerous breast disease.
Breast cancer is cancer that forms in the cells of your breast. Functional drainage of the breast Most 75-90 of the lymphatic drainage of the breast is to the ipsilateral same side axillary nodes. There are two techniques for creating a mammogram.
Breast cancer is most likely to affect the lobes lobules and milk ducts. Approximately 1 in 8 women will receive a breast cancer diagnosis in her lifetime. Tumor grade estrogen receptor status progesterone receptor status human epidermal growth factor receptor 2 status and when available multigene panel testing from the primary tumor.
Ducts are thin tubes that carry milk to the nipple. The kind of breast cancer depends on the cells in the breast. This chapter only discusses this adenocarcinoma type.
Most cancers of the breast arise from the cells which form the lobules and terminal ducts. A breast has three parts. Breast cancers can form in the ducts and the lobes.
The nipple is located in the middle of the areola which is the darker area surrounding the nipple. Mamma is a pair organ which relates to the type of the apocrine glands of the skin. These lobules and ducts are spread throughout the background fibrous tissue and adipose tissue fat that make up the majority of the breast.
It is quite common to have breast tissue up toward and even in the armpit. These are the so-called milk ridges or milk lines. There is some element of genetic risk in the development of cancers with some specific subsets having a very high genetic risk component.
Breast cancer cells break away from the original site and can enter and travel through nearby blood vessels to other parts of the body. In developed countries however it has been surpassed by lung cancer as a cause of cancer death in women. The lobules are the glands that function as producing milk.
Ducts are thin tubes that carry milk to the nipple. Other conditions that affect breast health include. What conditions and disorders affect breast anatomy.
Film-screen mammography creates a photographic film while. Breast cancer cells break away from the original site and can enter nearby lymph tubes vessels grow in nearby lymph nodes or travel through lymph vessels to other parts of the body. Ducts are thin tubes that carry milk to the nipple.
CHAPTER 1 Anatomy of the Breast Mammary gland glandula mammaria s. Breast tissue begins to originate by the fourth week of fetal life. Breast cancer refers to several types of neoplasm arising from breast tissue the most common being adenocarcinoma of the cells lining the terminal duct lobular unit.
Breast cancer occurs when some breast cells start growing abnormally and divide more rapidly than healthy cells results in formation of a lump or mass. Breast lumps benign tumors and breast inflammation are other conditions of the breast in women. Serratus anterior and crossing the free edge.
The fundamental concepts and components of breast cancer staging are reviewed. The AJCC Cancer Staging Manual which includes traditional anatomic factors now includes additional tumor characteristics. For example familial mutations of the BRCA1 and BRCA2 genes are associated with an increased risk of developing breast cancer.
It grows along two ridges one on either side running from the armpit axilla to the groin. Breast anatomy The breast is an endocrine gland placed on the front of the chest consisting of glandular acini also called alveoli coated by cells that have the property of securing milk under. Lobes Lobules And Milk Ducts A healthy female breast is made up of 1220 sections called lobes.
Anatomy of breast cancer. Mammograms are X-ray images of the breast that can reveal early signs of breast cancer. Cancer is a disease of dysregulated cell proliferation.
Lobules are arranged in clusters like bunches of grapes. These breast structures are generally where the cancer begins to form. Breast cancer is the number one threat to breast health.
It mostly occurs at the base on the large breast muscle m. Worldwide breast cancer is the most frequently diagnosed life-threatening cancer in women. Lymphatic and vascular system There is a lymphatic and vascular network inside the breast.
Those parts are lobules ducts and connective tissue. The breast is composed of glandular ducts and lobules connective tissue and fat with most of the benign and malignant pathology arising in the duct and lobular network Figure 2.
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