Worlds of David Darling
Encyclopedia of Science
   
Home > Encyclopedia of Science

thrombus




A blood clot that has formed inside an intact blood vessel – as distinct from one that has form to seal the wall of a blood vessel after injury (see blood clotting).

A thrombus is life-threatening if it grows to obstruct the blood supply to an organ such as the heart or brain. Even a thrombus in a less vital blood vessel can be dangerous because it can produce gangrene in part of an organ or extremity served by the blood vessel, or lead to embolism, in which a fragment of the thrombus breaks off and is carried to obstruct the blood circulation elsewhere.


Related entries

   • deep vein thrombosis
   • stroke
   • thrombocythemia and thrombocytosis
   • thrombocytopenia
   • thrombosis
   • varicose veins


Related category

   • HEALTH AND DISEASE