Breast carcinoma is a type of cancer that starts in the breast. Cancer starts when cells begin to grow out of control.
It is the cancer that develops in breast cells. Typically, the cancer forms in either the lobules or the ducts of the breast. Lobules are the glands that produce milk, and ducts are the pathways that bring the milk from the glands to the nipple. Cancer can also occur in the fatty tissue or the fibrous connective tissue within your breast.
Where breast cancer starts
Breast cancers can start from different parts of the breast.
Most breast cancers begin in the ducts that carry milk to the nipple (ductal cancers)
Some start in the glands that make breast milk (lobular cancers)
There are also other types of breast cancer that are less common like phyllodes tumor and angiosarcoma
Each type of breast cancer can cause a variety of symptoms. Many of these symptoms are similar, but some can be different. Symptoms for the most common breast cancers include:
A breast lump or tissue thickening that feels different than surrounding tissue and has developed recently.
Red, pitted skin over your entire breast.
Swelling in all or part of your breast.
A nipple discharge other than breast milk.
Bloody discharge from your nipple.
Peeling, scaling, or flaking of skin on your nipple or breast.
A sudden, unexplained change in the shape or size of your breast.
Changes to the appearance of the skin on your breasts.
A lump or swelling under your arm.
These two categories are used to describe the most common types of breast cancer, which include:
Ductal carcinoma in situ: Ductal carcinoma in situ (DCIS) is a non-invasive condition. With DCIS, the cancer cells are confined to the ducts in your breast and haven’t invaded the surrounding breast tissue.
Lobular carcinoma in situ: Lobular carcinoma in situ (LCIS) is cancer that grows in the milk-producing glands of your breast. Like DCIS, the cancer cells haven’t invaded the surrounding tissue.
Invasive ductal carcinoma: Invasive ductal carcinoma (IDC) is the most common type of breast cancer. This type of breast cancer begins in your breast’s milk ducts and then invades nearby tissue in the breast. Once the breast cancer has spread to the tissue outside your milk ducts, it can begin to spread to other nearby organs and tissue.
Invasive lobular carcinoma: Invasive lobular carcinoma (ILC) first develops in your breast’s lobules and has invaded nearby tissue.
Other, less common types of breast cancer include:
Paget disease of the nipple: This type of breast cancer begins in the ducts of the nipple, but as it grows, it begins to affect the skin and areola of the nipple.
Phyllodes tumor: This very rare type of breast cancer grows in the connective tissue of the breast. Most of these tumors are benign, but some are cancerous.
Angiosarcoma: This is cancer that grows on the blood vessels or lymph vessels in the breast.
A healthy diet can help lower the risk of breast cancer. Try to eat a lot of fruits and vegetables and keep alcohol at moderate levels or lower (a drink a day or under). While moderate drinking can be good for the heart in older adults, even low levels of intake can increase the risk of breast cancer.
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