Observation of the esophagus, pharynx and lingual root by gastrointestinal endoscopy with a percutaneous retrograde approach

Figure 1 Insertion of laparoscopic port 12 mm (Ethicon Endo-surgery, Inc. , Cincinnati, OH, USA). The sutures on both sides serve as a support for lifting of the gastric wall with Ideal Lifting (Olympus Optical Co, Ltd., Tokyo Japan).

Figure 2 Images of retrograde observation. A: Esophagogastric junction, and the entire view is provided in a single visual field; B: Observation of the hypopharyngoesophageal junction from the cervical esophagus. The cervical esophagus is dilated well, providing a good visual field; C: Laryngeal surface of the epiglottis viewed up from the hypopharynx. Epipharynx and nasal cavity are present in the arrow direction; D: Observation of the epipharynx is possible; E, F: Observation of the lingual root is possible.

Figure 3 The lingual root of the oral approach. A, B: The arrow showed the lingual root. The observation of this part was limited.

Figure 4 With forceps for laparoscopic surgery inserted through the port hole, intragastric surgery is possible.