Lesion: Smooth, circumferential ring of squamous mucosa, which can be located anywhere along the esophagus

Lesion: A concentric esophageal web seen on barium esophagram

• Treatment for webs causes symptoms: Dilatation, PPI after dilatation

Others : Biopsies, electric or laser-based incision, steroid injection in the lesion and surgical resection

Smiths MS, Diagnosis and Management of Esophageal Rings and Webs, Gastroenterology & Hepatology Volume 6 (11), 2010