Published in:
01-07-2020 | Pneumothorax | Imaging in Intensive Care Medicine
Pseudo B-line in pneumothorax
Published in: Intensive Care Medicine | Issue 7/2020
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Sonographic B-line, which indicates contact of visceral pleura with parietal pleura, is highly sensitive finding, which enables ruling out pneumothorax. The images herein were obtained from an 80-year-old man with refractory pneumothorax on the right side. On lung ultrasound, the right anterolateral chest wall showed A-lines without lung sliding and stratosphere sign in M-mode. Furthermore, comet-tail artifacts, mimicking B-lines were noted in the region where the visceral pleura did not contact the parietal pleura (Fig. 1; Video 1).
Fig. 1
Lung ultrasound images and chest computed tomography. a Two-dimensional image with a 5-16 MHz linear probe demonstrates A-line without lung sliding and occasional comet-tail artifacts without erasure of the A-line (arrow). b M-mode ultrasound image shows the stratosphere sign and movement of the artifact with breathing (thin arrows). The comet-tail artifact presented stratosphere sign. c Chest computed tomography at the level of images a and b. Absence of contact between the visceral and parietal pleura. d The position of the ultrasound probe is shown. A longitudinal scan was taken
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