
1) Endoscopy
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https://www.crosswordclues.com/clue/gastroscopy

• (n.) Examination of the abdomen or stomach, as with the gastroscope.
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http://thinkexist.com/dictionary/meaning/gastroscopy/

Examination of the inside of the stomach using a gastroscope passed through the mouth and esophagus. A gastroscope is a thin, tube-like instrument with a light and a lens for viewing. It may also have a tool to remove tissue to be checked under a microscope for signs of disease. Also called upper endoscopy.
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http://www.cancer.gov/dictionary?expand=G

Endoscopic inspection of the stomach (see Endoscope).
Found on
http://www.encyclo.co.uk/local/20896

(gas-tros´kә-pe) inspection of the interior of the stomach with a gastroscope.
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http://www.encyclo.co.uk/local/21001
Gas·tros'co·py noun (Medicine) Examination of the abdomen or stomach, as with the gastroscope.
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http://www.encyclo.co.uk/webster/G/13

The viewing of the stomach through a fibre optic instrument
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http://www.generalandmedical.com/glossary/index_alpha_Results.html?mode=G

Type: Term Pronunciation: gas-tros′kŏ-pē Definitions: 1. Inspection of the interior of the stomach through an endoscope.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=36496

What's a gastroscopy? A gastroscopy is an examination of your oesophagus (gullet), stomach and duodenum (the first part of the small intestine). This is done using a thin, flexible, tube-like telescope called an endoscope. The endoscope is passed through the mouth and into the gullet. The test may also be simply referred to as an endoscopy, or OGD ...
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http://www.spirehealthcare.com/Our-Treatments/Body-Map-and-A-Z/A-Z-Treatmen

Endoscopic examination of the stomach.
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http://www.thehorse.com/Glossary.xhtml?L=G

[
n] - visual examination of the stomach by means of a gastroscope inserted through the esophagus
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http://www.webdictionary.co.uk/definition.php?query=gastroscopy

examination of the oesophagus, stomach, and the first part of the small intestine (duodenum) using an endoscope inserted through the mouth
Found on
https://www.encyclo.co.uk/local/20875
noun visual examination of the stomach by means of a gastroscope inserted through the esophagus
Found on
https://www.encyclo.co.uk/local/20974

examining the lining of the stomach with a small, flexible tube with a light and a camera lens at the end (endoscope).
Found on
https://www.stanfordchildrens.org/en/topic/default?id=glossary---the-child-
No exact match found.