Table 2-1 Aortic aneurysm (continued).

Region of aortic aneurysm	Treatment procedure						Graft materials *7)
	Replacement			Exclusion with bypass	Stent graft	Hybrid *6)	Polyester	ePTFE	Others
	Cases	Y-graft	T-graft
Ascending aorta *1)	3	0	0	4	9	5	48	15	9
Aortic arch *1)	2	0	0	1	272	165	111	71	9
Descending thoracic aorta *1)	7	0	0	1	426	28	30	15	4
Thoracoabdominal aorta *1)	22	0	0	8	220	31	104	16	13
Abdominal aortic aneurysm *2)	7,967	5,870	1,191	68	9,975	38	7,058	353	79
with renal artery reconstruction	293	216	50	6	8	7	282	29	3
with renal artery clamping	1,258	961	238	9	12	7	1,230	50	5

＊6) Debranch bypass surgery combined with two staged TEVAR is counted as one case of hybrid treatment. ＊7) Only for open surgery.