Preterm Neonate with Spontaneous Pneumopericardium without any Other Associated Air Leaks.

We report a case of a preterm neonate with isolated spontaneous pneumopericardium occurring in the absence of a history of neonatal resuscitation, mechanical ventilation, major lung disease or another air leak. The pneumopericardium was asymptomatic and resolved without the need for aspiration, although the "nitrogen washout" technique was used.