Special Case on Reflux Esophagitis Sequence 9 of 32

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Superior Esophagic Sphincter. Observed through trans-fistula-gastrostomy retrograde endoscopy. The endoscope was advanced to overcome the sphincter observing the nasopharynx then passing by the mouth towards the outside.

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Julio Murra-Saca

Physician (Internal medicine - Gastroentrology)

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