A polyp is a growth typically found on mucous membranes lining the body's natural cavities, such as the colon, rectum, uterus, vagina, nose, sinus, bladder, stomach and so on. A polyp of the sinus, commonly referred to as a nasal polyp, is a growth located on the mucous membrane lining the sinuses. These are very common, benign tumors, that can, nevertheless, cause complications if they grow to a certain size. In some cases, a large number of polyps are reported, in which case it is called nasal polyposis, or sinonasal polyposis when the sinuses are also affected, frequently the case. Headaches, sinusitis, loss of smell, and runny nose are all possible symptoms in this case. Spray corticosteroids or even surgical ablation are often recommended.
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