An endoscopic instrument for observing the lining of the OESOPHAGUS. (See ENDOSCOPE.)
n. an illuminated optical instrument used to inspect the interior of the oesophagus (gullet), dilate strictures, obtain material for biopsy, or remove a foreign body. It may be a rigid metal tube or a flexible fibreoptic or video-camera instrument (see gastroscope). —oesophagoscopy n.
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