A range of endsocopic findings in EoE with application of the EREFS classification, which measures the 5 main endoscopic features of EoE: Edema, Rings, Exudates, Furrows, and Strictures. Edema is graded as absent (0) or present (1); Rings are graded as absent (0), mild (1), moderate (2), or severe (3); Exudates are graded as absent (0), mild (1), or severe (2); Furrows are graded as absent (0), mild (1), or severe (2); Stricture are graded as absent (0) or present (1), and if present the inner diameter can also be reported. (A) A patient with suspected EoE, but with a normal endoscopy. (B) A patient with edema, exudates, and furrows. (C) A patient with edema, rings, exudates, furrows, and a stricture. (D) A patient with edema, with edema, rings, exudates, furrows, and a stricture. (E) A patient with edema and furrows. (F) A patient with edema, rings, exudates, and furrows.