PERORAL GASTROSCOPY

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Abstract
Endoscopic examination may be said to be indicated for the diagnosis of every disease of the stomach, though not necessarily in every case of such disease. It does not replace nor lessen the necessity for any other method of diagnosis nor does it replace other methods for treatment except for the removal of foreign bodies.1 There has been fully realized the prophecy made seventeen years ago by one of the early workers in this field, who said: "Gastroscopy is not simply a feat. It has a field of usefulness that will increase as our skill and knowledge increase."2 Broadly speaking, there are three methods of gastroscopy: one by using an open tube, another by using a lens system and a third by combining both the open tube and the lens system. Each of these methods has its uses and its limitations. METHODS OF GASTROSCOPY Open-Tube Gastroscopy.— This is

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