Clinical comparative analysis of 3D printing-assisted extracorporeal pre-fenestration and Castor integrated branch stent techniques in treating type B aortic dissections with inadequate proximal landing zones

Table 4 The degree of thrombosis in the false lumen of thrombus in the two groups

site	Degree of false lumen thrombosis	3D-Printing group (n = 44)	Castor stent group (n = 40)	X²	P
Aortic stent segment	Complete thrombosis or disappearance of false lumen	32	29	0.024	0.988
	Partial thrombosis	8	7
	No thrombosis	4	4
Aortic non-stent segment	Complete thrombosis or disappearance of false lumen	10	7	0.546	0.761
	Partial thrombosis	22	23
	No thrombosis	12	10

ISSN: 1471-2261