The symptoms of triple negative breast cancer are not any different than the symptoms of other forms of breast cancer. The diagnosis is made when a lump or skin biopsy shows that the breast cancer cells don't have certain receptors. No one could tell with a tumor is triple negative until the pathology report. Although it is more common for breast cancer tumors to be within the breast, sometimes breast cancer shows up on the surface. If she hasn't had surgery yet, it is possible that she has tumors deep within her breast where a mammogram can't see them. That happened to me. At the time of surgery, the doctor found two tumors on the chest wall. I hope your mother's treatments go well. Please let us know as you have additional questions about her treatments.
TNBC doesn't have a specific symptom that will let the average observer identify it - only via the tests that come with a pathology report can a TNBC diagnosis be made. When you say "tumors/knots on her skin," do you mean the skin of her breast? Because this doesn't sound like a breast cancer symptom, either; usually BC is identified via feeling a lump within your breast, or after a mammogram/biopsy.
Please read our page on breast cancer symptoms; hopefully you'll find information there that can help you. If not, please ask your question again, with more detail/background; and we'll try to answer it here, OK? Take care- PJH
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