Direct visualization of postoperative aortobronchial fistula on computed tomography

Table 3 Summary of symptoms and image findings

		Initial CT (n = 6)		Onset CT (n = 4)		Follow-up CT (n = 6)
		n	%	n	%	n	%
Symptoms	Asymptomatic	4/6	66.7	-		3/6	50
	Fever	1/6	16.7	3/4	75	3/6	50
	Hemoptysis	1/6	16.7	1/4	25	1/6	16.7
Locations of ABF	Ascending aorta	1/6	16.7	0/4	0	1/6	16.7
	Aortic arch	2/6	33.3	1/4	25	1/6	16.7
	Aortic arch descending aorta	1/6	16.7	2/4	50	2/6	33.3
	Descending aorta	2/6	33.3	1/4	25	2/6	33.3
Image findings	Direct confirmation of ABF	3/6	50	1/4	25	3/6	50
	Fluid collection	4/6	66.7	4/4	100	4/6	66.7
	Ring enhancement	1/2	50	3/3	100	1/2	50
	Endoleak/Pseudoaneurysm	1/2	50	3/3	100	1/2	50
	Bronchodilation	6/6	100	4/4	100	6/6	100
	Atelectasis	5/6	83.3	4/4	100	5/6	83.3
	Dirty fat sign	2/6	33.3	4/4	100	3/6	50
	Pulmonary hemorrhage	0/6	0	0/4	0	0/6	0

CT: Computed tomography; ABF: Aortobronchial fistula.