LYCOS RETRIEVER 
Sinusitis
built 644 days ago
Acute bacterial sinusitis is caused by mucociliary transport obstruction at the sinus ostia. This may be inflammation in the anterior ethmoids with secondary obstruction of the maxillary and/or frontal sinus drainage systems or it can be swelling and obstruction of the ostia directly, all of the above are compounded by anatomic narrowing and by previous inflammation with resultant cicatricial scarring.
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Inflammation