A 24yr old female with history of easy fatigabality,dysphagia. Oral ulcers and oesophageal webs are shown on endoscopy. What is most common site for the oesophageal webs?

Esophageal webs :- - refer to an esophageal constriction caused by a thin mucosal membrane projecting into the lumen. - M/c in women - located in upper esophagus (cervical esophagus) - can be seen on frontal and lateral views on Xray - pt. may remain asymptomatic, but if the stenosis is severe enough causes dysphagia and regurgitation - arises from anterior wall and never from posterior wall - is associated with plummer wilson syndrome - these are associated with risk of carcinoma(post cricoid)