Pancreatic FistulaFistulaPancreaticojejunostomyPancreaticoduodenectomyPancreatectomyCutaneous FistulaArteriovenous FistulaGastric FistulaIntestinal FistulaBiliary FistulaPancreatic DuctsBronchial FistulaVascular FistulaDrainageRectal FistulaUrinary FistulaSurgical StaplingPancreatic DiseasesEsophageal FistulaPostoperative ComplicationsPancreasGastrostomyRectovaginal FistulaSuture TechniquesPancreatic PseudocystVesicovaginal FistulaTreatment OutcomeRespiratory Tract FistulaVaginal FistulaTracheoesophageal FistulaJejunostomyPancreatic NeoplasmsPancreatic JuiceOctreotideRetrospective StudiesAnastomosis, SurgicalUrinary Bladder FistulaAmylasesArterio-Arterial FistulaCyst FluidArteriovenous Shunt, SurgicalEndoscopyAnastomosis, Roux-en-YGastrectomyCarotid-Cavernous Sinus FistulaSplenectomyLength of StayReoperationSurgical Procedures, ElectivePancreatitis, ChronicLaparoscopyTime FactorsTomography, X-Ray ComputedProspective StudiesSecretinCholangiopancreatography, Endoscopic RetrogradeDigestive System FistulaCentral Nervous System Vascular MalformationsFollow-Up StudiesRisk FactorsDuodenum