So you have heard the words “breast cancer” and “metaplastic carcinoma of the breast” and you turned to the internet and googled “it.”  You’ve been surfing around online trying to make sense of what is happening to you, to sort it out and to put together some sort of plan. I know, I did the same thing.  That is why I started breast cancer MyStory.  It is here for you so you’d have a soft space online to land when the hard diagnosis of breast cancer hits.  Take your time to wander our site.  In all your frantic worries of the moment, don’t forget to stop and smell the flowers (thus the photo reminder to the left that I took in my backyard garden). We are here for you 24/7 and you are welcome anytime.

The following information is from

What is Metaplastic Breast Cancer?

Metaplastic breast cancer, also called metaplastic carcinoma of the breast, is a rare type of breast cancer. Cancer begins when normal cells in the breast begin to change and grow uncontrollably, forming a mass called a tumor. A tumor can be benign (noncancerous) or malignant (cancerous, meaning it can spread to other parts of the body).

About the breast

The breast is mainly composed of fatty tissue. Within this tissue is a network of lobes, which are made up of tiny, tube-like structures called lobules that contain milk glands. Tiny ducts connect the glands, lobules, and lobes, carrying the milk from the lobes to the nipple, located in the middle of the areola (darker area that surrounds the nipple of the breast). Blood and lymph vessels run throughout the breast; blood nourishes the cells, and the lymph system drains bodily waste products. The lymph vessels connect to lymph nodes, the tiny, bean-shaped organs that ordinarily help fight infection.

About metaplastic breast cancer

Metaplastic breast cancer describes a cancer that begins in one type of cell (such as those from the glands of the breast) and changes into another type of cell. It is very different from the typical ductal or lobular breast cancer. Most cases of metaplastic breast cancer start in the epithelial cells, and then change into squamous (nonglandular) cells. Because the cells that give rise to metaplastic breast cancer are not part of the normal breast gland, this cancer does not have estrogen receptors (ERs), progesterone receptors (PRs), or HER2 (a protein found in 20% of ductal and lobular breast cancers).

Metaplastic breast cancer can spread to the lymph nodes and other areas of the body, especially the lungs. At the time of diagnosis, metaplastic breast cancer is considered an invasive cancer, meaning that it has already spread beyond the duct or lobe.

Find out more about basic cancer terms used in this section.


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Breast Cancer MyStory is searching for stories to feature on our website in 2013 to help inspire others with your type of breast cancer. Is it you?  Please submit your story…it just might help someone else.

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