thumb|Squamous cell carcinoma occluding [[bronchus with metastasis to adjacent lymph node]]
Metastasis is when cancer cells spread from where they originally formed to other parts of the body, such as nearby lymph nodes or distant organs. It matters because metastatic cancer is generally more serious and harder to treat than cancer that remains in one location.
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via Wikipedia infobox
thumb|Squamous cell carcinoma occluding [[bronchus with metastasis to adjacent lymph node]]
Metastasis is the spread of a pathogenic agent from an initial or primary site to a different or secondary site within the host's body; the term is typically used when referring to metastasis by a cancerous tumor. The newly pathological sites, then, are metastases (mets). It is generally distinguished from cancer invasion, which is the direct extension and penetration by cancer cells into neighboring tissues.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).