Eosinophilic Esophagitis (EoE) - Endoscopic ReFerence Score (EREFS)

Edema (Loss of vascular markings):

 - Grade 0: Distinct vascularity

 - Grade 1: Absent or decreased

Rings (trachealization):

 - Grade 0: None

 - Grade 1: Mild (ridges)

 - Grade 2: Moderate (distinct rings)

 - Grade 3: Severe (Scope will not pass)

Exudate (white plaques):

 - Grade 0: None

 - Grade 1: Mild (≤ 10% surface area)

 - Grade 2: Severe (> 10% surface area)

Furrows (vertical lines):

 - Grade 0: None

 - Grade 1: Mild

 - Grade 2: Severe (depth)

Stricture:

 - Grade 0: Absent

 - Grade 1: Present



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