It is a remarkable fact that one can look through a dozen text books on metallurgy and not find a definition of the word steel. Some of them describe the properties of many other irons and then allow you to guess that everything else is steel. ... Read more of Composition And Properties Of Steel at Steel Making.caInformational Site Network Informational
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Specular Esophagoscopy





Category: INTRODUCTION OF THE ESOPHAGOSCOPE
Source: A Manual Of Peroral Endoscopy And Laryngeal Surgery

Inspection of the hypopharynx and upper
esophagus is readily made with the esophageal speculum shown in Fig.
4. High lesions and foreign bodies lodged behind the larynx are thus
discovered with ease, and such a condition as a retropharyngeal
abscess which has burrowed downward is much less apt to be overlooked
than with the esophagoscope. High strictures of the esophagus may be
exposed and treated by direct visual bouginage until the lumen is
sufficiently dilated to allow the passage of the esophagoscope for
bouginage of the deeper strictures.





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