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Figure 4 A new structure next to the right atrium was seen on cardiac magnetic resonance imaging 3 months after interventional closure of a patent foramen ovale. (A) Four-chamber view steady-state free precession sequence, (B) proton-weighted coronal turbo spin echo. After 25 months the supposed hematoma had completely disappeared, which is shown in (C) and (D), images acquired by a T2-weighted black-blood technique.