The usage of flexible endoscopes in the gastrointestinal tract (G.I.T) is considered a revolution in the diagnostic tools of the gastroenterology. It is a noninvasive technique for evaluating the lumen and mucosa of the gastrointestinal tract. It is applied for esophagoscopy and gastroscopy combined with the normal anatomical correlations. The present study carried out on apparently healthy five mongrel dogs which admitted to surgical clinic of veterinary medicine and four other dogs used for normal dissection. In this study, there was combination between anatomical, endoscope and radiograph to capture endoscopic image and at the same time take x-ray film along the different parts of the esophagus and the stomach. This study clarified the different directional changes with anatomical interpretations and gave imaginary picture in the endoscopist mind about the overall shape and directions of the insertion tube during the esophagus and the stomach examination. This study used for detecting the normal endoscopic anatomy as well as using canine model for educational training of the endoscopic examination of the esophagus and the stomach to avoid the mucosal injury and perforation along their walls.

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