How does the ostia become blocked?

Updated: Mar 01, 2018
  • Author: Itzhak Brook, MD, MSc; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

Obstruction of the natural sinus ostia prevents normal mucus drainage. The ostia can be blocked by mucosal swelling or local causes (eg, trauma, rhinitis), as well as by certain inflammation-associated systemic disorders and immune disorders.


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