The “echo-free space” technique: A safe and reliable method for endoscopic ultrasound scope insertion into the esophagus

In recent years, the use of endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) and EUS-guided drainage has greatly expanded [1] [2] [3] [4]. However, inserting a linear EUS scope into the esophagus can be challenging, particularly in intubated or pediatric patients. This is because the scope is side-viewing, and the tip does not face the cervical esophagus. As a result, it can damage the laryngopharynx and lead to unsuccessful insertion if advanced, based on endoscopic imaging ([Fig. 1]).