Pneumocele of the maxillary sinus.
D000328:Adult; D001274:Atmospheric Pressure; D003560:Cysts / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000002:abnormalities* / Q000000981:diagnostic imaging; D014056:Tomography, X-Ray