A nasopharyngeal polyp is a pinkish-white mass of tissue that grows from the back of the throat, Eustachian tube (the small tube that drains the middle ear into the throat) or the middle ear itself. Inflammation of the lining of one of these areas causes the tissue to become thick. Sometimes the mass will actually grow into an organized, round or oval growth that hangs down into the airway at the back of the nasal cavity. The cause of polyps is unknown; however, it is suspected that cats develop them because of reaction to infectious agents such as respiratory viruses.
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