See Also: pneumomediastinum(medicine)
pneumomediastinum, diagnostic(medicine)
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medicine(2)(dictionary)
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pneumomediastinum (medicine)


pneumomediastinum
<radiology> SPONTANEOUS PNEUMOMEDIASTINUM, common; usually during the 2nd - 3rd decade, aetiology: rupture of marginally situated alveoli from sudden rise in intralveolar pressure: acute asthma, aspiration pneumonia, hyaline membrane disease, measles, giant cell pneumonia, coughing, vomiting, exercise, parturition, diabetic acidosis, tumour erosion of trachea/oesophagus, pneumoperitoneum, pneumoretroperitoneum, complication: air block (decreased venous return) TRAUMATIC PNEUMOMEDIASTINUM (rare), pulmonary interstitial emphysema (positive pressure ventilation), ruptured bronchus (commonly associated with pneumothorax), ruptured oesophagus (diabetic acidosis, alcoholic, Boerhaave) see also: Hamman sign