MEDIASTINAL emphysema, its precursors and its sequelae have been known to clinicians for well over a century. Laënnec, 1 in his treatise on diseases of the chest, published in 1819, gave an ...

Clinical examination revealed jugular and supraclavicular subcutaneous emphysema ... This is an idiopathic form of pneumomediastinum that manifests with cutaneous emphysema and can be associated ...

Pain is the most common presenting symptom. Chest radiographs may show pneumomediastinum, subcutaneous emphysema, mediastinal widening, and mediastinal air-fluid levels, and are diagnostic in 90%.

There was no hemoptysis. Radiography showed pneumomediastinum (linear hypertransparencies; white arrows), cervical soft-tissue emphysema (asterisks), and a nondislocated fracture of the left first ...