Spontaneous pneumomediastinum in H1N1 infection: uncommon complication of a common infection.

H1N1 viral infection leads to complications, such as pneumonia, respiratory failure, myocarditis and encephalitis. Spontaneous pneumomediastinum (SPM) is an extremely rare consequence of H1N1 infection and such cases have been sparsely reported. SPM is identified only by a careful clinical examination and obtaining a timely roentgenogram.