10 Fr S-Type Plastic Pancreatic Stents in Chronic Pancreatitis Are Effective for the Treatment of Pancreatic Duct Strictures and Pancreatic Stones

Table 3

Long-term outcomes after stent removal.

Events	EPS success	EPS failure	value
	41	18	—
^1Follow-up periods (month, median)	26.0	36.0	0.20
Location of stricture
Head/body/head + body/dorsal-duct	12/1/2/2	15/3/0/0
MPD restenosis (%)	17 (41.5)	—	—
^2Time to restenosis (days, median)	191
Causes of restenosis
Remaining stones (%)	7 (17.1)
Resumption of alcohol (%)	4 (9.8)
Major papilla restenosis (%)	3 (7.3)
Recurrence of stones (%)	2 (4.9)
Restenting (%)	16 (39.0)	—
Re-placement period (days, median)	260
Complications
Pancreatic abscess	1 (36)	0
Papillary restenosis	1 (359)	0
Liver abscess	1 (37)	0
^3Coexisting malignant disease (%)	3 (5.9)	1 (2.9)	0.64
Pancreatic cancer (%)	3 (5.9)	0
(Diagnosed day after 1st EPST, median)	(211)	—
Pharyngeal cancer (%)	0	1 (2.9)
(Diagnosed day after 1^st EPST, median)	—	(1613)

¹ values: Mann-Whitney test. The following month was counted after the first performance of EPST. ²Counted from the EPS removal day when MPD dilation effect was revealed. ³ values: chi-square test.