Abstract
Background and aimsAcute necrotizing pancreatitis (ANP) can affect main pancreatic duct (MPD) as well as parenchyma. However, the incidence and outcomes of MPD disruption has not been well studied in the setting of ANP. MethodsThis retrospective study investigated 84 of 465 patients with ANP who underwent magnetic resonance cholangiopancreatography and/or endoscopic retrograde cholangiopancreatography. The MPD disruption group was subclassified into complete and partial disruption. ResultsMPD disruption was documented in 38% (32/84) of the ANP patients. Extensive necrosis, enlarging/refractory pancreatic fluid collections (PFCs), persistence of amylase-rich output from percutaneous drainage, and amylase-rich ascites/pleural effusion were more frequently associated with MPD disruption. Hospital stay was prolonged (mean 55 vs. 29 days) and recurrence of PFCs (41% vs. 14%) was more frequent in the MPD disruption group, although mortality did not differ between ANP patients with and without MPD disruption. Subgroup analysis between complete disruption (n = 14) and partial disruption (n = 18) revealed a more frequent association of extensive necrosis and full-thickness glandular necrosis with complete disruption. The success rate of endoscopic transpapillary pancreatic stenting across the stricture site was lower in complete disruption (20% vs. 92%). Patients with complete MPD disruption also showed a high rate of PFC recurrence (71% vs. 17%) and required surgery more often (43% vs. 6%). ConclusionsMPD disruption is not uncommon in patients with ANP with clinical suspicion on ductal disruption. Associated MPD disruption may influence morbidity, but not mortality of patients with ANP. Complete MPD disruption is often treated by surgery, whereas partial MPD disruption can be managed successfully with endoscopic transpapillary stenting and/or transmural drainage. Further prospective studies are needed to study these items.
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