<prompt> Feline esophagus is:Eosinophilic esophagitisGERDRadiation esophagitisCarcinoma esophagus  <response>: Ref. API Textbook of Medicine. Pg. 1690 Feline EsophagusFeline esophagus also known as oesophageal shiver ,refers to the transient transverse bands seen in the mid and lower esophagus on a double contrast barium swallow .The appearance is almost always associated with active gastro-esophageal reflux and is thought to be due to contraction of muscularis muosa with resultant shortening of the esophagus and bunching up of mucosa in the lumen . 