Introduction:

chest pain is a frequent cause of consultation to the pediatric emergency department. A little-known cause is pneumomediastinum, which can be classified as secondary, when there is a trigger and spontaneous, when there is no evident cause. It is also called Hamman’s syndrome, which has an incidence ranging from one in 30 000 to 44 000 emergency department visits and occurs predominantly in males. We present the case of a 12-year-old girl, previously healthy, who consulted for 12 hours of chest pain with pleuritic characteristics of sudden onset, associated with dyspnea and diaphoresis, with no history of trauma, respiratory or gastrointestinal symptoms or other previous symptomatology. The patient was subsequently diagnosed with spontaneous pneumomediastinum.

Discussion:

this disease is very rare in children. Most cases are rapidly self-limited with symptomatic management and very few can be complicated with cardiac tamponade. Chest radiography is the most accurate diagnostic method.

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