True about Schatzki&;s ring: (A) Has skeletal muscle, (B) Located at lower esophagus, (C) Causes dysphagia, (D) Contain all layers of oesophagus
Answer is B. SCHATZKI'S RINGS They are semicircular protrusion of lower oesophageal mucosa located at or just above the oesophagogastric junction (squamocolumnar junction). Its under-surface is lined by columnar gastric epithelium. * They involve only the mucosa and submucosa of the oesophagus, not the muscle. * They present with dysphagia and reflux Treatment * Intermittent oesophageal bougienage. * Antireflux drugs .ref: SRB&;s manual of surgery,3 rd ed, pg no 749