Pericarditis is inflammation of the sac around the heart, called the pericardium. If pericarditis becomes chronic, it can lead to pericardial effusion. This is when the pericardium fills with fluid.
A 58-year-old woman presents to the hospital reporting fatigue, swelling of the legs and feet, and shortness of breath. She explains that her symptoms have been getting worse over the past 2 months.