Incidence and evolution of foreign body impaction in the upper gastrointestinal tract and its relationship with eosionophilic oesophagitis.

Background: Foreign body impaction is a frequent indication of urgent endoscopy. One of the reasons for impaction is eosinophilic oesophagitis (EE). To analyze characteristics of oesophageal foreign body impactions and their relationship with eosinophilic oesophagitis.