Why do lymph nodes swell when there is cancer?Watch
Fluid drains from all tissue into the lymphatic system. A cancerous organ is no different. If caught early, then it is unlikely that the cancer will spread to the lymph nodes. The longer it is left the more likely. Once it does it becomes more difficult to treat.
Right...so more tissue (ie more tumour) = more fluid = more swelling in lymph nodes?
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