Purpose: The purpose of this course is to

When ciliary action is impaired or the ostia obstructed, mucous can accumulate in sinus & become infected. Sinusitis is a common infection that may occur in any of the paranasal sinuses. May be acute or chronic. Blockage of the ostia may be due to deviated nasal septum, bony or congenital abnormalities, infections or allergies. ................
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