Fig. 1
A: Transesophageal echocardiography showed a multivesicular space on the back of the left atrium that had no significant fistula with the left atrium.
B: A schema of the transesophageal echocardiography findings. The grayed area was false lumen (FL) of the left atrium. The true lumen of the left atrium (asterisk) was compressed by the FL.
C, D: Enhanced computed tomography (C: axial view, D: sagittal view.) immediately after surgery showed a non-enhanced space on the back of the left atrium (arrow heads), which was not connected with the left atrium.