Coagulation factor IV is an indicator of symptomatic pulmonary embolism in patients with primary lung cancer

Background Coagulation factor IV, also known as serum ionised calcium (SIC), participates in coagulative process and tends to elevate in patients with primary lung cancer. It may be an indicator of symptomatic pulmonary embolism (PE) due to primary lung cancer (LC). Methods A total of 388 patients who underwent CTPA and/or radionuclide ventilation perfusion scanning due to PE‐suspected symptoms were stratified into LCPE (lung cancer and PE)...