A 34-year-old man with amyopathic dermatomyositis and rapidly progressive dyspnea with facial swelling. Diagnosis: pneumomediastinum and subcutaneous emphysema secondary to amyopathic dermatomyositis-associated interstitial lung disease.

@article{Powell2007A3M,
  title={A 34-year-old man with amyopathic dermatomyositis and rapidly progressive dyspnea with facial swelling. Diagnosis: pneumomediastinum and subcutaneous emphysema secondary to amyopathic dermatomyositis-associated interstitial lung disease.},
  author={Christian Powell and Brian Kendall and Richard Wernick and John E. Heffner},
  journal={Chest},
  year={2007},
  volume={132 5},
  pages={1710-3}
}