hemangioma-thrombocytopenia syndrome, a blood disorder usually occurring in the first few months of life in which severe thrombocytopenia and other evidence of intravascular coagulation are accompanied by rapidly expanding hemangiomas of the trunk, extremities, and abdominal viscera, sometimes associated with bleeding and anemia. Bleeding is thought to result from the trapping and destruction of platelets within the tumor and depletion of circulating clotting factors. Also called Kasabach-Merritt syndrome.
