The symptoms sounded ordinary: fever, a cough, diarrhea, and poor feeding. The 66-day-old girl brought to Children's Medical Center in Tehran was started on empirical treatment for presumed sepsis.
A chest X-ray changed the picture, showing a massive collection of fluid around her heart. Emergency CT angiography found the cause: a mass filling her right atrium, measuring roughly 50 by 70 by 40 millimeters in a baby who weighed five kilograms.
