Special optical instrument used to examine the esophagus, to dilate the canal, or to remove a foreign object or material for biopsy.
An illuminated optical instrument used to inspect the interior of the esophagus (gullet), dilate its canal (in cases of stricture), obtain material for biopsy, or remove a foreign body. It may be a rigid metal tube or a flexible fiber-optic instrument.
An endoscope for examination of the esophagus.