Honda M, Hori Y, Shionoya Y, Nakada A, Sato T, Kobayashi T, Shimada H, Kida N, Nakamura T. Observation of the esophagus, pharynx and lingual root by gastrointestinal endoscopy with a percutaneous retrograde approach. World J Gastrointest Endosc 2010; 2(8): 288-292 [PMID: 21160628 DOI: 10.4253/wjge.v2.i8.288]
Corresponding Author of This Article
Tatsuo Nakamura, MD, Department of Bioartifical Organs, Institute for Frontier Medical Science, Kyoto University, 53 Kawahara Cho, Sakyo-ku, Kyoto 606-8507, Japan. nakamura@frontier.kyoto-u.ac.jp
Article-Type of This Article
Brief Articles
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Michitaka Honda, Yoshio Hori, Yoshiki Shionoya, Akira Nakada, Toshihiko Sato, Takeshi Kobayashi, Hidenori Shimada, Naoki Kida, Tatsuo Nakamura, Department of Bioartifical Organs, Institute for Frontier Medical Science, Kyoto University, 53 Kawahara Cho, Sakyo-ku, Kyoto 606-8507, Japan
Author contributions: Honda M conceived the experiments; Honda M, Nakamura T and Shionoya Y performed the experiments and together analyzed the data with Hori Y, Sato T and Kobayashi T; Kida N and Shimada H and Nakada A provide technical support and valuable help; and all the authors discussed the results and commented on the manuscript.
Correspondence to: Tatsuo Nakamura, MD, Department of Bioartifical Organs, Institute for Frontier Medical Science, Kyoto University, 53 Kawahara Cho, Sakyo-ku, Kyoto 606-8507, Japan. nakamura@frontier.kyoto-u.ac.jp
Telephone: +81-75-7514149 Fax: +81-75-7514844
Received: April 6, 2010 Revised: June 24, 2010 Accepted: July 1, 2010 Published online: August 16, 2010
Abstract
AIM: To evaluate the efficacy of retrograde observation of the esophagus, pharynx, larynx and lingual root.
METHODS: With the beagle dog under anesthesia, the anterior wall of the stomach was fixed on the abdominal wall in a similar way to percutaneous endoscopic gastrostomy. The gastrointestinal scope was inserted via a 12 mm laparoscopic port for subsequent retrograde observation from stomach to the oral cavity.
RESULTS: With this technique, direct observation of gastric cardia was possible without restriction. The cervical esophagus was dilated well, also allowing clear observation of the hypopharyngo-esophageal junction. If the tongue was manually pulled out forward, observation of the lingual root was possible.
CONCLUSION: This procedure is easy and effective for pre-treatment evaluation of the feasibility of endoscopic resection in cases of superficial carcinoma of head and neck.
