[Pneumopericardium in the newborn (author's transl)].

A case of pneumopericardium in a newborn affected of hyaline membrane disease, and undergoing assisted ventilación is presented. Literature is reviewed. Physiopatology, morbidity, mortality, and predispossing factors are described. Knowledge of the clinical simptomatology is essential in order to perform the prompt pericardiocentesis, should cardiac tamponade be present.