<unk>  is an office based procedure in which the patient is anesthetized locally in the nose and sometimes the oropharynx. The scope is advanced into the ipsilateral pyriform sinus and through the esophageal inlet to the stomach, where the esophagus can be examined, with special attention paid to the gastroesophageal (GE) junction. An advantage of<unk>  over other more invasive cancer screening methods that require conscious sedation is that it can be performed using topical anesthesia alone with the patient sitting upright in an exam chair unencumbered by cardiac monitoring equipment.
Transnasal esophagoscopy
Mediastinoscope
Falloposcopy
Nasoendoscopy
Mediastinoscopy
Stroboscope
Laryngoscopy
Gonioscopy