Lymphatic system

Tattoos have gained widespread popularity but according to a new study they may not be harmless decorations. Tattoo ink doesn’t just stay in the skin; it travels and accumulates in the lymph nodes, potentially causing lifelong changes to the immune system.

New research shows lymph nodes aren’t just cancer bystanders, they’re the command centers fueling immune attacks. Surgically removing them along with tumors may weaken treatment, while preserving them could supercharge it.