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Spontaneous pneumomediastinum.
  1. M G Tytherleigh,
  2. A A Connolly,
  3. J L Handa
  1. ENT Department, Derriford Hospital, Plymouth.

    Abstract

    Spontaneous pneumomediastinum, or Hamman's syndrome, is a rare condition which may present with the symptoms of chest pain, dyspnoea, dysphagia, or neck pain. The signs of subcutaneous emphysema and Hamman's crunch (the presence of a crepitance sound that varies with the heartbeat on auscultation of the precordium) are usually present. A case of this syndrome occurring in an elderly patient with none of the recognised risk factors is presented.

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