Eosinophilic esophagitis

Esophagitis is swelling and irritation, called inflammation, of the tissues that line the esophagus. A long, flexible tube that’s tipped with a camera, called an endoscope, can be used to see inside the esophagus. This endoscopic image of eosinophilic esophagitis shows irritated rings of irregular tissue that stem from ongoing inflammation. These are known as esophageal rings.