It would be unlikely. Because of your age alone, it would be unlikely. However, you should see your physician to have it checked out.
Could be. See ENT. It could certainly be a cancer, akthough it could be something else like polyps etc. Go to see an ear, nose and throat (ent (and have it examined thoroughly. Depending on the ENT evaluation, a biopsy may be needed to rule in and rule out for malignancy.