Stomach VolvulusIntestinal VolvulusOnchocerca volvulusDigestive System AbnormalitiesOnchocerciasisIntestinal ObstructionOnchocercaCecal DiseasesTorsion AbnormalityStomachGastrointestinal TractSimuliidaeIvermectinOnchocerciasis, OcularDuodenal ObstructionSitus InversusDigestive SystemDigestive System Surgical ProceduresMicrofilariaIntestinal AtresiaColon, SigmoidIntestinal DiseasesAbdominal PainIntestinal Pseudo-ObstructionIntestinesDuodenal DiseasesAntigens, HelminthVomitingIntestine, SmallInfant, NewbornStomach NeoplasmsFilaricidesDigestive System Physiological PhenomenaColonic DiseasesDuodenumUpper Gastrointestinal TractStomach DiseasesMansonelliasisGastrointestinal NeoplasmsDNA, HelminthAntibodies, HelminthLaparoscopyAbnormalities, MultipleLoaHelminth ProteinsDipetalonemaTomography, X-Ray ComputedCameroonGastrointestinal DiseasesRadiography, AbdominalColon, TransverseHernia, HiatalSyndromeGastric MucosaJejunal DiseasesGangreneSkin Diseases, ParasiticLower Gastrointestinal TractAntiparasitic AgentsAnthelminticsRetrospective StudiesFilarioideaCecumIleal DiseasesIntestine, LargeRotationGastric DilatationColostomyDiethylcarbamazineColonGuatemalaAbdomen, AcuteAntinematodal AgentsTreatment OutcomeLoiasisMansonellaLaparotomyIntestinal MucosaStomach UlcerWolbachiaBarium SulfateHerniaUrinary Tract InfectionsHernia, DiaphragmaticIleumEndoscopy, GastrointestinalGastrointestinal Motility