PMC9363624_01
Imaging data and intraoperative data of the patients: (a) stenosis (red arrow) of the confluence of the right subclavian vein and the innominate vein in a digital subtraction angiography examination, (b) stent (red arrow) placement in central vein stenosis, (c) transthoracic echocardiography showing pericardial effusion and a stent (red arrow) in the right ventricle, (d) transesophageal echocardiography indicating a segment of stent migration (red arrow) in the right ventricle, (e) the tail of the stent (yellow arrow) was found to have been inserted into the atrial wall during the operation, and (f) a retrieved covered stent.
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The digital subtraction angiography (DSA) examination revealed stenosis at the confluence of the right subclavian vein and the innominate vein (Figure 1a). Following this, no residual stenosis or intimal tear was observed, and the stenosis was relieved (Figure 1b). Following an echocardiography examination, pericardial effusion and a stent in the right atrium and ventricle were identified (Figure 1c). The thoracotomy and transesophageal echocardiography procedures indicated that the stent had migrated to the right ventricle (Figure 1d) with its tail located at the convergence of the inferior vena cava (IVC) and the right atrium. The right atrium was opened, and it was clear that the tail of the covered stent was inserted into the wall of the right atrium (Figure 1e) and was close to the convergence of the IVC. The covered stent was successfully retrieved (Figure 1f), and the crevasse at the convergence of the IVC was repaired.