Proximal true lumen collapse in a chronic type B aortic dissection patient: A case report

Abstract

BACKGROUND

In the context of aortic dissection, increasing pressure within the newly formed false lumen can result in the progressive compression of the true aortic channel. However, true lumen collapse in chronic type B aortic dissection (cTBAD) patients is rare, with few clinical or experimental studies to date having explored the causes of such collapse.

CASE SUMMARY

In the present report, we describe a rare case of true-lumen collapse in an 83-year-old patient diagnosed with cTBAD, and we discuss potential therapeutic interventions for such cases. Following thoracic endovascular aortic repair (TEVAR), computed tomography angiography revealed satisfactory stent-graft positioning, no endoleakage, true lumen enlargement, thrombus formation in the false lumen, and slight enlargement of the true lumen distal to the stent-graft. Computational hemodynamic analyses indicated that the wall shear stress and pressure within the false lumen were significantly reduced following TEVAR.

CONCLUSION

TEVAR treatment of cTBAD patients suffering from proximal true lumen collapse can facilitate some degree of effective remodeling.

Keywords: True lumen collapse; Chronic type B aortic dissection; Thoracic endovascular repair; Computational hemodynamics analysis; Case report

Core Tip: We describe a rare case of true-lumen collapse in an 83-year-old patient with chronic type B aortic dissection, and we discuss potential therapeutic interventions for such cases.