<i>In-situ</i> pulmonary thrombosis and pulmonary embolus are distinct thrombotic phenotypes in critically ill patients with COVID-19 ARDS

This study included critically ill who succumbed to COVID-19 and from whom pulmonary histopathological examination was obtained. Patients with histological characteristics of IST were compared with those having PE and to controls without any pulmonary thrombosis. Inflammation, endothelial activity and hemostasis biomarkers were measured in blood and CT–scans were analyzed.