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.
Chest ultrasound, longitudinal section in B-mode. A: “Bat sign”. B: Anatomical findings corresponding to the so-called “bat sign”. Ribs (orange arrows) and their respective acoustic shadows (asterisks). The pleura is hyperechogenic and identified between the ribs (red arrow). A-line (blue arrow) parallel to the pleura and originating from the pleural reverberation. The bat wings correspond to both the ribs and their acoustic shadows, and the bat head to the pleural echo.
