The main types of maxillary sinus cysts are mucous cysts and mucosal cysts. In mucous cysts, the body may experience nasal congestion, breathlessness, dizziness, headache, pressure and pain in the maxillary sinus, or in severe cases, facial bulging and deformation. The best clinical treatment for maxillary sinus mucus cysts is transnasal surgery. Although maxillary sinus cysts are benign lesions, maxillary sinus cysts often recur and cause sinusitis. If repeated inflammatory irritation occurs over a long period of time it can easily become cancerous. Conservative treatment of this disease is ineffective and should be actively treated once detected. Mucosal cysts are related to rhinitis sinusitis, etc., but most of them are found unintentionally by taking CT, or suddenly a yellow or green liquid comes out of the nose and is only found when you go to the hospital for examination. There are no other symptoms. If it does not cause headache and dizziness, it can be left untreated So when maxillary sinus cysts appear, it is recommended to go to the hospital promptly to identify the cause and take different treatments respectively.