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.
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.
Authors: James T Parsons; William M Mendenhall; Scott P Stringer; Robert J Amdur; Russell W Hinerman; Douglas B Villaret; Giselle J Moore-Higgs; Bruce D Greene; Tod W Speer; Nicholas J Cassisi; Rodney R Million Journal: Cancer Date: 2002-06-01 Impact factor: 6.860
Authors: Paulo M O Campoli; Daniela M M Cardoso; Marília D Turchi; Flávio H Ejima; Orlando M Mota Journal: BMC Gastroenterol Date: 2009-06-26 Impact factor: 3.067