case_images: PMC5831310_01
case_images: A) Transthoracic echocardiogram showing cor triatriatum: proximal and distal
  left atrium separated by a membrane (Pointing white arrow), LA: left atrium;
  LV: left ventricle; RV: right ventricle; RA: right atrium. B)
  Transesophageal echocardiogram showing cor triatriatum: proximal and distal
  left atrium separated by a membrane (Pointing white arrow), LA: left atrium;
  LV: left ventricle.
case_images: abc-110-01-0101-g01.jpg
case_images: PMC5831310_01_abc-110-01-0101-g01.jpg
case_images: f1
case_images: Transthoracic echocardiogram (TTE) showed presence of a membrane in left atrium suggestive of cor triatriatum [Figure 1A]. This finding was confirmed with transesophageal echocardiogram (TEE), which revealed a membrane in the left atrium attaching at the Coumadin ridge and the atrial septum, just caudal to the fossa ovalis [Figure 1B].