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Upper esophageal web due to a ring formed by a squamocolumnar junction with ectopic gastric mucosa (another explanation of the Paterson-Kelly, Plummer-Vinson syndrome)

Ectopic Gastric MucosaEsophagusEsophageal CancerGastroenterologyPathologyPlummer-vinson SyndromeUpper Gastrointestinal SurgeryGastrointestinal PathologyMedicineEndoscopic DiagnosisUpper Esophageal Web