3.1　Plastic Stent

The outcomes from selected series of plastic stent insertion for MPD strictures are summarised in Table 9.3.Plastic stents of varying diameters of 7-，8.5-，or 10-Fr may be used in a single or multiple fashion.When multiple stents are successfully inserted，a higher rate of stricture resolution is seen（Costamagna et al.2006）.(https://www.daowen.com)