A bag on the throat can be seen in lymphoid follicular hyperplasia, epiglottis cysts, tonsil papilloma and so on. 1. Lymphoid follicular hyperplasia: usually refers to lymphoid follicular hyperplasia of the laryngeal wall, due to its own lymphoid follicles, in the occurrence of acute and chronic inflammation, because of the inflammatory stimulus will lead to reactive hyperplasia, part of which will be fused into a large plaque. 2. Epiglottis cysts: often for the epiglottis tongue or epiglottis valley mucus gland ducts blockage caused by cystic hyperplasia, may be caused by inflammatory stimulation, there may be other causes of the symptoms, mild cases usually have no obvious manifestations, when serious, you may feel a local foreign body sensation. 3. Tonsil papilloma: and human papilloma virus infection has a certain relationship, is a benign tumor, if the papilloma is relatively small, so that the symptoms are not obvious, with the gradual increase in size, may feel the local foreign body sensation. A bag on the throat may also be caused by other reasons, such as vocal polyps, hypopharyngeal cancer, etc. It is best to go to the hospital to find out the cause of the targeted treatment or treatment.