 Sometimes, multiple rings may occur in the esophagus, leading to the term "corrugated esophagus" or "feline esophagus" due to similarity of the rings to the cat esophagus.Presence of white exudates in esophagus is also suggestive of the diagnosis.On biopsy taken at the time of endoscopy, numerous eosinophils can be seen in the superficial epithelium.