Balloon dilatation for treatment of hepatic venous outflow obstruction following pediatric liver transplantation

Table 1 Demographic data of the five pediatric patients

Case No.	Gender	Age	Original disease	Type of transplant	Graft type	Onset after transplantation (mo)
1	F	10 mo	Biliary atresia	LDLT	Left lateral lobe	4
2	F	3 yr	Biliary atresia	LDLT	Left lateral lobe	32
3	F	9 yr	OTCD	Cross-auxiliary double-domino donor liver transplantation	Right lobe	1
4	M	7 mo	Biliary atresia	LDLT	Left lateral lobe	9
5	F	10 mo	Biliary atresia	LDLT	Left lateral lobe	3

LDLT: Living-donor liver transplantation; OTCD: Ornithine transcarbamylase deficiency.

Table 2 Clinical outcomes following balloon dilatation

Case No.	Vessel	Procedure	Size	Pre-pressure (mmHg)	Post-pressure (mmHg)	Follow-up (mo)
1	HV	PTA	6 mm-4 cm	34/8	13/9	16
2	HV	PTA	8 mm-4 cm	29/7	18/18	16
3	RHV	PTA	8 mm-4 cm	17/10	10/10	1, recurrence
	RHV	PTA	8 mm-4 cm	22/14	15/15	10
4	HV	PTA	8 mm-4 cm	30/17	22/19	33
5	HV	PTA	6 mm-2 cm	17/13	17/15	4
	IVC	PTA	6 mm-2 cm	17/13	14/14	4

HV: Hepatic vein; RHV: Right hepatic vein; IVC: Inferior vena cava; PTA: Percutaneous transluminal angioplasty.