Maxillary sinus.
D003937:Diagnosis, Differential; D006801:Humans; D008439:Maxillary Diseases / Q000175:diagnosis; D008441:Maxillary Neoplasms; D008443:Maxillary Sinus / Q000000981:diagnostic imaging / Q000196:embryology / Q000293:injuries / Q000502:physiology; D009957:Oroantral Fistula; D011859:Radiography; D012852:Sinusitis / Q000175:diagnosis; D014081:Tooth Extraction / Q000009:adverse effects