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Figure 1: Midesophageal four-chambered view showing postmitral valve replacement left atrial free wall dissection (an echolucent area from the mitral annular area to the left atrial free wall, creating a new chamber without communications into the true left atrium)

Figure 1: Midesophageal four-chambered view showing postmitral valve replacement left atrial free wall dissection (an echolucent area from the mitral annular area to the left atrial free wall, creating a new chamber without communications into the true left atrium)