A case of acute subcutaneous emphysema of the lateral region of the ne
ck is described. The patient, a 26-year-old woman, also had radiologic
evidence of pneumomediastinum. She completely recovered in a few days
under prophylactic antibiotherapy. In this case, subcutaneous and med
iastinal emphysema was most probably due to the introduction of air in
to the soft tissue during dental surgery using compressed air equipmen
t.