J33.8: Other polyp of sinus
The sinuses are cavities in the skull that are filled with air. They make the head lighter and influence the sound of the voice. Air is moistened and warmed up in the sinuses. The sinuses have an inner lining of a moist and smooth membrane. This inner membrane is also called the mucous membrane. The mucous membrane produces fluid. The sinuses are connected to the nose via an opening. As a result, fluid can run out of the sinuses into the nose.
Various things can cause the cells in the mucous membrane to multiply. A bulge then develops in the mucous membrane.
The mucous membrane in one of your sinuses has bulged out. The bulge is preventing the discharge of fluid from the sinus. If fluid accumulates, the mucous membrane in the sinus may then become inflamed. This inflammation can cause pain.
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