Intestinal ObstructionIleal DiseasesBezoarsAirway ObstructionJejunal DiseasesIntussusceptionIntestinal AtresiaDuodenal ObstructionMesenteric CystUreteral ObstructionMeconiumColonic DiseasesMeckel DiverticulumLaparotomyHirschsprung DiseaseTissue AdhesionsIleal NeoplasmsCecal DiseasesHerniaIleusIntestinal Pseudo-ObstructionHernia, AbdominalIntestinal VolvulusTuberculosis, GastrointestinalRadiography, AbdominalDuodenal DiseasesIleocecal ValveIntestine, SmallDigestive System Surgical Procedures