Elevated Serum IgG4 Levels in a Young Patient with Polyserositis and Necator americanus Infection

Figure 3

Transthoracic echocardiography. Parasternal short axis view (apex) showing a large pericardial effusion (>5 cm) with a swinging heart. Pulse wave Doppler (PWD) examination shows significant respiratory variations (i.e., >25%) in left ventricular diastolic filling pattern.