Self-Expanding Metallic Stent Fracture in the Treatment of Malignant Biliary Obstruction

Table 3

Clinical characteristics of the six patients.

Patient	Case 1	Case 2	Case 3	Case 4	Case 5	Case 6
Age, gender	62, male	81, female	82, male	82, male	71, male	78, female
Primary disease	Pancreatic carcinoma	Pancreatic carcinoma	Pancreatic carcinoma	Pancreatic carcinoma	Cholangiocarcinoma	Duodenal ampulla carcinoma
Level of obstruction	Distal	Distal	Distal	Distal	Distal	Distal
Parameters of stent	10 mm × 80 mm	First stent, 8 mm × 60 mm; next two stents, 8 mm × 60 mm	10 mm × 60 mm	8 mm × 80 mm	First stent, 10 mm × 40 mm; second stent, 10 mm × 100 mm	8 mm × 60 mm
Number of stents	One	Three	One	One	Two	One
Pre-/postdilation	Yes	Yes	Yes	Yes	Yes	Yes
Across the ampulla	Yes	Yes	Yes	Yes	Yes	Yes
Time to stent fracture (days)	89	37	65	179	142	249
Patency time of the stent (days)	89	187	65	179	142	249
Overall survival time (days)	241	312	335	393	662	455

10 mm is the stent diameter and 80 mm the length. Time to stent fracture is defined as the time period from last stent insertion to stent fracture.