What is the role of endoscopic exam in the diagnosis of acute sinusitis (sinus infection)?

Updated: Mar 01, 2018
  • Author: Itzhak Brook, MD, MSc; Chief Editor: Michael Stuart Bronze, MD  more...
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Endoscopic examination may reveal the origin of the purulent discharge from the middle meatus and may provide information about the nature of ostiomeatal obstruction. The use of endoscopy may also aid in the etiologic diagnosis of acute sinusitis by allowing the careful attainment of purulent secretions from the sinus ostia for culture. Purulent secretions in the middle meatus (highly predictive of maxillary sinusitis) may be seen using a nasal speculum and a directed light. Purulence can occur with and without any sinus bacterial infection, and is often present in those with nasopharyngitis. [55]

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