title: Clinical radiology quiz.
authors.forename: P M
authors.initials: PM
authors.lastname: Som
mesh_terms: D003937:Diagnosis, Differential; D005626:Frontal Sinus; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D009078:Mucocele / Q000175:diagnosis; D010254:Paranasal Sinus Diseases / Q000175:diagnosis