Large intra-atrial structure 6 years after percutaneous atrial septal defect closure

A 52-year-old woman after percutaneous secundum atrial septal defect (ASD) closure (Occlutech Figulla ASD device 24 mm) 6 years ago was admitted with dyspnoea (NYHA Class II) and unspecific chest pain. Physical examination, electrocardiogram, and laboratory tests were normal. Transthoracic echocardiography revealed moving structure (46 × 21 mm) in left atrium, slightly flopping into left …