Esophageal AchalasiaCardiaManometryDilatationEsophagusAnti-Dyskinesia AgentsEsophagogastric JunctionEsophageal Sphincter, LowerDeglutition DisordersFundoplicationEsophagoscopyEsophagoplastyPeristalsisBarium SulfateEsophageal Motility DisordersCatheterizationEsophageal NeoplasmsEsophageal DiseasesStomach NeoplasmsBotulinum ToxinsLaparoscopyDigestive System Surgical ProceduresEsophageal PerforationPressureGastroesophageal RefluxEsophageal Spasm, DiffuseEsophageal Sphincter, UpperEsophagectomyDeglutitionAdenocarcinomaNeuromuscular AgentsEndoscopyBotulinum Toxins, Type ALacrimal Apparatus DiseasesGastric FundusHeartburnNitrergic NeuronsMyenteric PlexusTreatment OutcomeStomachSpasmThoracoscopyEndoscopy, Digestive System