Unilateral demonstration of the atlas in ipsilateral maxillary alveolar bone destruction.
In conventional sinus films in occipito-frontal projection, the atlas is superimposed on the maxillary alveolar processes. If destruction of the alveolar process is present, the atlas-half on the affected side may be unusually clearly demonstrated. The value of this 'unilateral demonstration of the atlas' was confirmed by comparing a group of 20 patients with alveolar process destruction with two groups of 50 patients, one reported as normal and another with mucosal thickening, fluid levels or entirely dense sinuses.
D000368:Aged; D000539:Alveolar Process / Q000000981:diagnostic imaging* / Q000473:pathology; D001270:Cervical Atlas / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008437:Maxilla / Q000000981:diagnostic imaging* / Q000473:pathology; D008444:Maxillary Sinus Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D008875:Middle Aged; D009296:Nasal Cavity / Q000473:pathology; D009361:Neoplasm Invasiveness; D009669:Nose Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology; D010255:Paranasal Sinus Neoplasms / Q000000981:diagnostic imaging*; D011859:Radiography; D012852:Sinusitis / Q000000981:diagnostic imaging / Q000473:pathology