
Persistent Swollen Lymph Nodes: An Early Signal of Potential Cancer Spread
Why Swollen Lymph Nodes Deserve Attention.Lymph nodes are a crucial part of the immune system, filtering abnormal cells and pathogens from the blood and lymphatic fluid. While temporary swelling is often linked to infection or inflammation, persistent enlargement—especially if it grows over time—may indicate deeper health issues. For cancer patients or those at higher risk, prolonged lymph node swelling should not be ignored.