Pancreatic tumor cells release large amounts of a protein called tissue factor into the bloodstream. This protein acts as the primary “trigger” for blood clotting, initiating the coagulation cascade, a complex sequence of reactions that ultimately forms a clot.
In addition, tumor cells release microscopic particles containing tissue factor into the bloodstream. These particles travel through the blood, spreading signals that promote clotting to distant areas of the body. They typically settle in the legs, where clots often form.
Adenocarcinoma mucins
Another important factor is mucin: large, sugar-coated proteins produced by many pancreatic tumors. When mucins enter the bloodstream, they act as adhesive bridges, attaching to platelets and white blood cells. This interaction activates them in a way that greatly promotes clot formation.
Together, these mechanisms create what doctors sometimes call “sticky blood,” a condition in which the natural blood clotting system remains constantly active, greatly increasing the likelihood of dangerous clots forming.
