1. A free-floating left atrial mass
Dr Marco Pocar, MD, Alda Bregasi, MD, Davide Passolunghi, MD, Francesco Donatelli, MD 
The Lancet 
Volume 379, Issue 9811, (January 2012)
DOI: /S (11)
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2. Figure Free-floating giant left atrial thrombus
(A) and (B) show the complete absence of atrial wall attachments in two-dimensional and three-dimensional transoesophageal echocardiograms; (C) shows the thrombus unable to cross the mitral valve orifice in view of its size (scale in cm).
The Lancet  , DOI: ( /S (11) )
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