Outcomes of EUS-guided drainage of debris-containing pancreatic pseudocysts by using combined endoprosthesis and a nasocystic drain

BackgroundThe presence of debris within a pseudocyst may impair success of endoscopic drainage.ObjectiveTo compare the clinical outcomes and adverse-event rates of EUS-guided pseudocyst drainage with and without a nasocystic drain for the management of pancreatic pseudocysts with viscous solid debris-laden fluid.DesignRetrospective study.SettingSingle, tertiary-care referral center.PatientsConsecutive patients with pancreatic pseudocysts managed by EUS-guided drainage: those with solid debris who underwent drainage via nasocystic drains alongside stents (n = 63) and those with solid debris who underwent drainage via transmural stents only (n = 24).InterventionDrainage via nasocystic drains alongside stents or drainage via transmural stents only.Main Outcome MeasurementsThe primary outcomes were short-term success and long-term success of the procedures. The secondary outcomes were procedure-related adverse events and reintervention.ResultsThe patients with viscous solid debris-laden fluid whose pseudocysts were drained by both stents and nasocystic tubes had a 3 times greater short-term success rate compared with those who had drainage by stents alone (P = .03). On 12-month follow-up, complete resolution of pseudocysts with debris drained via stents alone was less (58%) compared with those with debris who underwent drainage via nasocystic drains alongside stents (79%; P = .059). The rate of stent occlusion was higher in cysts with debris drained by stents alone (33%) compared with those drained via nasocystic drains alongside stents (13%; P = .03).LimitationsRetrospective design; limited sample size.ConclusionIn patients with pseudocysts with viscous debris-laden fluid, EUS-guided drainage by using a combination of a nasocystic drain and transmural stents improves clinical outcomes and lowers the stent occlusion rate compared with those who underwent drainage via stents alone.