Ellen_C says
http://hubpages.com/hub/Balloon-Sinuplasty-Sinus-S
It is chronic inflammation of the sinuses and causes infection.
57What are sinuses? what is sinusitis?
There are 8 sinuses or cavities in the normal head,all of them are lined with mucus membranes and they are found about your nose,a little bit larger than a lead pencil these holes are found in the... keep reading →
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