Constrictive Pericarditis Presenting as Isolated Ascites.

Constrictive pericarditis is a rare cause of right-sided heart failure secondary to a stiff, non-compliant pericardium. Clinical presentation can vary considerably and requires a high suspicion for diagnosis. A 31-year-old male presented to the emergency department with complaints of abdominal distension. An abdominal ultrasound revealed large volume ascites; thus, it was initially suspected he had underlying cirrhosis. However, an echocardiogram revealed a diagnosis of constrictive pericarditis. It's important for clinicians to consider constrictive pericarditis in a patient presenting with unexplained right-sided heart failure.