DuodenumCeliac ArteryPancreasPancreas TransplantationAneurysmPancreaticoduodenectomySplenic ArteryAngiographyAneurysm, FalseMesenteric Artery, SuperiorHepatic ArteryAmpulla of VaterAnastomosis, SurgicalArteriesArterial Occlusive DiseasesEmbolization, TherapeuticTomography, X-Ray ComputedDogsPostoperative ComplicationsTreatment OutcomeTime Factors