Endoscopic management of unresectable malignant gastroduodenal obstruction with a nitinol uncovered metal stent: A prospective Japanese multicenter study

Table 2 Procedure details and study outcomes n (%)

Technical success	39 (100)
Relationship of the papilla and stent placement site
Oral side of the papilla	23 (59.0)
On the papilla	6 (15.4)
Anal side of the papilla	10 (25.6)
Procedure related complication
Aspiration pneumonitis	4 (10.3)
Bleeding 0	0
Perforation 0	0
Cholangitis 0	0
Motality disorder 0	0
Clinical success	36 (92.3)
Additional treatment of malignancy after stent placement
Chemotherapy	15 (38.5)
Chemoradiation	1 (2.6)
Survival after stent placement, d
Median (IQR)	50.0 (25.0-152.0)
mean ± SE	102.9 ± 18.2
Stent patency, d
Median	Not available
mean ± SE	149.6 (7.2)
Stent dysfunction
Stent ingrowth	2 (5.1)
Stent overgrowth	1 (2.6)
Stent compression	0
Stent migration	0
Food impaction	0

IQR: Interquartile range.