In Stage 3 breast cancer, what characteristic does the cancer have?

Stage 3 breast cancer is characterized by a significant progression of the disease, where the cancer has spread beyond the original tumor site. In this stage, the cancer typically invades nearby tissues and may affect regional lymph nodes, indicating a more advanced level of disease compared to earlier stages. This spread can often involve extensive local involvement, making it crucial to assess the extent of the disease for treatment planning.

The presence of cancer in surrounding tissues and lymph nodes signifies that it is no longer localized and poses a greater challenge for treatment and management. This characterization is important as it helps medical professionals determine the best course of action, which may include a combination of surgery, chemotherapy, radiation, and hormonal therapies.