stage IIIA breast cancer

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Stage III breast cancer 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 (under the arm) lymph nodes that are attached to each other or to other structures; or (2) the tumor is 5 centimeters or smaller and has spread to axillary lymph nodes that are attached to each other or to other structures; or (3) the tumor is larger than 5 centimeters and has spread to axillary lymph nodes that may or may not be attached to each other or to other structures.