Breast cancer (breast) stage IIIA. Definition

Medical Definition: Breast cancer (breast) stage IIIA

Breast cancer (breast) in Stage III is divided into stages IIIA, IIIB and IIIC. In stage IIIA, (1) no tumor is found in the breast, but cancer is found in axillary lymph nodes (under arm) that are attached to each other or other structures, or cancer may be found in the lymph nodes near the breastbone, or (2) the tumor is two centimeters or smaller and the cancer has spread to axillary lymph nodes that are connected to each other or other structures, or cancer may have spread to lymph nodes near the breastbone , or (3) the tumor is larger than two centimeters but not more than five centimeters and the cancer has spread to axillary lymph nodes that are connected to each other or other structures, or cancer may have spread to lymph nodes near the breastbone, or (4) the tumor is larger than five centimeters and the cancer has spread to axillary lymph nodes that may be attached to each other or other structures, or cancer may have spread to lymph nodes near the sternum.

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