Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Computed tomography (CT) vessel tree-in-bud schematic in coronavirus disease (COVID-19). Compared with normal pulmonary vessels (left), peripheral vessels in COVID-19 (middle) are resolved on CT imaging and demonstrate a tree-in-bud pattern. Hypercoagulability and lack of fibrinolysis in COVID-19 driving pulmonary thrombosis likely enhances the peripheral pulmonary vessels on CT imaging to cause the tree-in-bud pattern, although the direct pathologic cause is not yet determined.
