Metal stents placement for refractory pancreatic duct stricture in children

Figure 1 The fully covered self-expandable metal stent with 3 flaps at both ends used in this study (Hanarostent Biliary dual flap; M. I. Tech, Seoul, South Korea). A and B: The border between the gray and yellow points, shown by the blue arrows, marks the end of the stent. C: Small red arrow heads indicate the flaps.