Extension of Pneumomediastinum on Neck POCUS Which of the following is associated with this finding? (Props to @sthgte for clip!) Resolution: Hamman's sign (aka, Hamman's crunch) would be expected in this patient with pneumomediastinum. Labeled Schematic: https://twitter.com/EUSmkh/status/1 #pneumomediastinum #Hammans #Sign #Crunch #Neck #POCUS #Trachea #clinical #ultrasound
