title: The unilateral thick-walled antrum. A previously unrecognized entity?
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D008443:Maxillary Sinus / Q000000981:diagnostic imaging* / Q000473:pathology; D009295:Nasal Bone / Q000000981:diagnostic imaging / Q000473:pathology; D012852:Sinusitis / Q000000981:diagnostic imaging / Q000473:pathology; D014057:Tomography, X-Ray Computed