PMC3034922_01
Intraoperative (a and b) and histological (c) findings.
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fig1
Histological examination described it as fibrinous clot (Figure 1) while immunohistochemical and tumoral markers' searches were negative. 
Transesophageal echocardiography documenting the floating mass in descending thoracic aorta.
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fig2
Angio-CT scan showing follow-up one year after intervention.
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fig3
At a followup of 1, 6, 12, 24, and 36 months Angio-CT scans showed patency of the graft no signs of endoleak (Figure 3); at clinical examination, there were no signs of neurological deficits nor signs of limbs ischemia.
PMC3034922_02
Angio-CT documenting the floating thrombus.
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fig4
Angio-CT scan which excluded intimal flaps, tears, or dissection, but revealed a floating mass attached by a small pedicle to the anterior wall of the proximal thoracic aorta (Figure 4).
Angio-CT scan two years after endovascular repair.
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fig5
In Figure 5 a multiplanar curve reconstruction using a Siemens workstation shows correct apposition of the graft 24 months after the intervention.