Post partum pneumomediastinum.

A 19-year-old primigravida had a normal vaginal delivery after a 90-minute second stage of labour. Within two hours she complained of dyspnoea and was noticed to have unusual swelling of the face and neck. The diagnosis of subcutaneous emphysema was confirmed by chest X-ray and pneumomediastinum was also detected. Uneventful recovery over four days followed conservative management, administration of oxygen and use of simple analgesics.