In speech pathology and medicine, nasoendoscopy is the endoscopic examination of the velopharynx via the nose, often with a CCD camera or a fiber optic camera on a flexible tube passed through the nostril. It can provide information to evaluate speech and velopharyngeal function or dysfunction, as in diseases such as sinonasal carcinomas. ==Proced...
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http://en.wikipedia.org/wiki/Nasoendoscopy
A test to examine your upper airways and voice box. A tube is put up your nose and down into your throat. The tube contains a light and a camera so your doctor can see inside.
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https://www.encyclo.co.uk/local/20753
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