What are thrombi
Blood cells are conventionally divided into three large groups: erythrocytes (red cells that carry oxygen), leukocytes (white cells, defender cells that trap pathogens in the blood) and platelets (nuclear-free repair cells). Blood clots, as you might guess, are formed thanks to platelets. The process of clot formation is a protective mechanism, without it we would die from blood loss even after a small injury. They are the first to rush to the site of damage – to the wound, ulcer, thinning – and form a clot that clogs the damage in the vessels, stopping the bleeding. When the wound heals, such blood clots resolve on their own. The process of thrombus formation is also called blood clotting. And the whole system – maintaining the blood in a liquid state, the formation of blood clots and the dissolution of blood clots – is called hemostasis.
As a result, blood clots can be found where there is no need for their “repair” function (at least in such a volume) – in veins, arteries of different diameters, and even in the cavities of the heart. In any case, this is a pathology, but the nature and level of risk depend on the location of the blood clots.