A 40-year-old male with a Previous pneumothorax (PTX) and Video-assisted thoracoscopic surgery (VATS) presented with the chief complaints of progressive dyspnea and his provisional diagnosis is made as phrenic nerve injury during surgery. The sniff test images are attached. What do the results of the sniff test suggest?
*This image-based case is from Docplexus editorial team for educative purpose only Source: Radiopedia The answer is posted in the comment section. click here