B-Lines in Pulmonary Fibrosis Lung comets are usually seen in wet lungs, but do not forget that pulmonary fibrosis is an important differential diagnosis. In the latter case, right-sided ventricular dysfunction can also be picked up by echo. Ivan Stankovic, MD, PhD @Ivan_Echocardio #BLines #Pulmonary #Fibrosis #comets #tails #clinical #ultrasound #lung