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Yes, you can have swollen lymph nodes under the arm without any noticeable changes in the breast. Swollen lymph nodes can be an early symptom of breast cancer, including HER2-positive breast cancer, even before a lump is felt in the breast. If you notice swelling around your armpit or collarbone, it's important to talk to Show Full Answer

Yes, you can have swollen lymph nodes under the arm without any noticeable changes in the breast. Swollen lymph nodes can be an early symptom of breast cancer, including HER2-positive breast cancer, even before a lump is felt in the breast. If you notice swelling around your armpit or collarbone, it's important to talk to your healthcare provider.

For more information, you can refer to the knowledge base:
- Swollen lymph nodes can be an early symptom of breast cancer, including HER2-positive breast cancer. (source: her2-positive-breast-cancer-early-symptoms-to-watch-for)

 AI-generated responses are not a substitute for medical advice. These services are not intended to diagnose, treat, or cure any condition or disease. Always ask your doctor about specific health concerns.

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