title: Pneumocele of the frontal and sphenoidal sinuses.
mesh_terms: D000293:Adolescent; D004322:Drainage; D004646:Emphysema / Q000175:diagnosis; D005626:Frontal Sinus / Q000601:surgery; D006801:Humans; D008297:Male; D008722:Methods; D009078:Mucocele / Q000175:diagnosis; D012886:Skull / Q000000981:diagnostic imaging; D013101:Sphenoid Sinus / Q000601:surgery; D014056:Tomography, X-Ray; D014636:Valsalva Maneuver