[Hamman's Syndrome (Spontaneous Pneumomediastinum)].

The authors present the case of a previously healthy, 22-year-old male nonsmoker who sought emergency room treatment complaining of retrosternal pain. He reported a history of odynophagia two days before, followed by produc- tive cough, fever and dyspnea. On chest radiography, a line could be observed surrounding the heart and the continuous diaphragm sign.