vascular invasion

Vascular invasion occurs when cancer cells spread into nearby blood vessels or lymph vessels. This allows the cancer to access the bloodstream or lymphatic system, increasing the risk of spreading to other parts of the body. Detecting vascular invasion is important because it can indicate a more aggressive tumor and influence treatment decisions. Pathologists identify it by examining tissue samples under a microscope, looking for cancer cells within the walls or lumens of blood or lymph vessels. Overall, vascular invasion signifies a potential for wider disease spread and may suggest a need for more comprehensive therapy.