[Unusual association of chylopericardium and aortic hypoplasia in a neonate].

We report the case of a neonate with two very rare anomalies: primary chylopericardium and diffuse hypoplasia of the thoraco-abdominal aorta. The presentation on the 16th post-natal day was with dyspnoea and refusal to feed. The initial clinical examination revealed hepatomegaly and weak femoral pulses.

[Spontaneous pneumomediastinum in dermatomyositis: a pathophysiological approach using imaging].

Introduction: Spontaneous pneumomediastinum is a rare complication of dermatomyositis.

Case Report: We report a case of pneumomediastinum with massive subcutaneous emphysema occurring in a female patient with dermatomyositis treated with cortico-steroids.

Conclusions: Our case illustrates perfectly the mechanism of spread of air along the broncho-vascular structures and also explains the presence of pneumomediastinum in the absence of pneumothorax.