EchinococcosisEchinococcosis, PulmonaryEchinococcus granulosusEchinococcusAlbendazoleEchinococcosis, HepaticAnticestodal AgentsAnthelminticsPelvic InfectionHymenolepiasisAntibodies, HelminthYemenCentral Nervous System CystsCysticercusBone Diseases, InfectiousCysticercosisAntigens, HelminthCestode InfectionsBiliary FistulaThighSheep DiseasesMuscular DiseasesZoonosesSpinal DiseasesLaminectomyEndemic DiseasesTomography, X-Ray ComputedSheepEnzyme-Linked Immunosorbent AssayRecurrenceSensitivity and SpecificityRetrospective Studies