Which of the following is the feature of schatzki's ring?

Ans. is 'a' i.e., Found in lower one - third of esophagus at squamocolumnar junction Schatzki's Ring* It occurs at the junction of squamous and columnar epithelium at the lower end of oesophagus and has also been called lower oesophageal ring.* Usually seen in patients above 50 years of age.* Cause is unknown.* Symptomatic patients complain of intermittent dysphagia and some may even present with bolus obstruction.* It may be associated with hiatus hernia.* Treatment is oesophageal dilatation.