Bedside ultrasonographic diagnosis of pneumothorax.

Pneumothorax (PTX) is the presence of an excessive amount of air between the two layers of the pleura. The clinical results depend on the extent of lung collapse. Bedside lung ultrasonography (BLUS) is a valuable way to diagnose PTX in the emergency department. The lung point is a pathognomonic sign of PTX. Here, we present a previously healthy 17-year-old male with left shoulder pain for 2 days, who was referred to the emergency department (ED). He had no history of trauma. BLUS was performed by the emergency physician. The lung point was detected with BLUS, and he was diagnosed with primary spontaneous PTX. Needle aspiration was performed. The patient was followed up with BLUS. Evidence of PTX was absent in BLUS after 6 h, and the patient was discharged for follow-up by a respiratory physician. In this case, the lung point in BLUS helped us make an accurate diagnosis of primary spontaneous PTX and invasive management of disease was arranged accordingly.