Brief Images: Massive pericardial effusion.

Significant pericardial effusions are an uncommon but very important disorder in childhood. In our patient, cross-sectional imaging demonstrated a massive pericardial effusion. The underlying etiology here was connective tissue disease causing recurrent pericardial effusion. An associated left-sided pleural effusion was noted. Clinicians must be aware of this disorder in the pediatric age group, performing a thorough evaluation in all children with large pericardial effusions, and managing appropriately.