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Types of
Breast Cancer
The most common type of
breast cancer begins in the lining of the ducts and is called
ductal carcinoma.
Another type, called lobular carcinoma, arises in the lobules.
When breast cancer spreads
outside the breast, cancer cells are often found in the lymph
nodes under the arm (axillary
lymph nodes). If the cancer has reached these nodes, it may
mean that cancer cells have spread to other parts of the
body--other lymph nodes and other organs, such as the bones,
liver, or lungs--via the lymphatic system or the bloodstream.
Cancer that spreads is the
same disease and has the same name as the original (primary)
cancer. When breast cancer spreads, it is called metastatic
breast cancer, even though the secondary tumor is in another
organ. Doctors sometimes call this "distant"
disease.
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