Normal Lung Sliding
Read Dr. Butts’ article, “Comet Tails and Lung Sliding: Evaluating for Pneumothorax,” in the December 2013 issue, and then view this video that demonstrates a normal “sliding” motion of the pleura back and forth. Comet tail artifacts are also seen to appear and disappear, emanating from the pleural border. The combination of the presence of sliding and comet tail artifacts virtually excludes a pneumothorax.
Christine Butts, MD