J Postgrad Med Close
 

Figure 1: Panel A: Supraventricular tachycardia @ 160/minute. Panel B: Echocardiogram, apical four chamber view. There is clearly a mass in the right atrium, near the lateral wall and abutting the tricuspid valve. Panel C: Contrast echocardiogram. All four chambers are well opacified. The filling defect is clearly demarcated in the right atrium. Panel D: Cardiac MRI. The arrow points to the mass seen in the echocardiographic examination. The black dots show the extension into the right atrial appendage. Panel E: Pleomorphic plump ovoid to spindle shaped cells forming delicate dilated capillary channels (H&E × 400). Panel F: Some of the polygonal cells have formed intracytoplasmic lumina (arrow) which contain red blood cells (H&E × 400)

Figure 1: Panel A: Supraventricular tachycardia @ 160/minute. Panel B: Echocardiogram, apical four chamber view. There is clearly a mass in the right atrium, near the lateral wall and abutting the tricuspid valve. Panel C: Contrast echocardiogram. All four chambers are well opacified. The filling defect is clearly demarcated in the right atrium. Panel D: Cardiac MRI. The arrow points to the mass seen in the echocardiographic examination. The black dots show the extension into the right atrial appendage. Panel E: Pleomorphic plump ovoid to spindle shaped cells forming delicate dilated capillary channels (H&E × 400). Panel F: Some of the polygonal cells have formed intracytoplasmic lumina (arrow) which contain red blood cells (H&E × 400)