Maxillary sinusitis may become cancerous, but this is relatively rare, and most patients can get better control of their condition after timely treatment and will not become cancerous. Maxillary sinusitis generally refers to an inflammatory disease that occurs in the maxillary sinus, with symptoms such as thickening of mucous membrane and more secretions. However, if the maxillary sinus is stimulated by chronic inflammation and adverse physical and chemical factors for a long time, squamous epithelial hyperplasia may occur in the normal mucous membrane, and then there is a chance of cancer. For patients suffering from this disease, if there is no obvious discomfort symptoms, you can not do special treatment for the time being, pay attention to do a good job in the nasal position of the care work can be; but if there has been a severe headache, fever, and mental depression and other symptoms, you need to consult a doctor in time, a clear diagnosis, and comply with the doctor’s instructions for standardized treatment.