title: Clinical problem solving: radiology: radiology quiz case 1. Pneumosinus dilatans of the maxillary, ethmoid, and sphenoid sinuses.
authors.affiliation: Royal Alexandra Hospital, Paisley, Scotland.
authors.forename: Ian
authors.initials: I
authors.lastname: Ganly
authors.forename: Robin
authors.initials: R
authors.lastname: McGuiness
mesh_terms: D000328:Adult; D004108:Dilatation, Pathologic; D005005:Ethmoid Sinus / Q000473:pathology; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000473:pathology; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging* / Q000473:pathology*; D013101:Sphenoid Sinus / Q000473:pathology; D014057:Tomography, X-Ray Computed