Cross-reactivity between buckwheat and quinoa in a patient with eosinophilic esophagitis caused by wheat.

Eosinophilic esophagitis is a chronic, antigen-mediated esophageal disease characterized clinically by symptoms of esophageal dysfunction and histologically by eosinophilpredominant inflammation. The symptoms of eosinophilic esophagitis in adults are (from the least to the most frequent) dysphagia, chest pain, food impaction, and upper abdominal