title: Calcified remnants of the notochord in the roof of the nasopharynx.
abstract: Seven cases of calcification in the roof of the nasopharynx are reported. These calcifications situated in the midline opposite the pharyngeal bursa, were associated in four patients with a neural or osseous defect of the craniocervical junction. The authors estimate the frequency of this asymptomatic calcification to be about 0.1%. This finding is thought to be a calcified remnant of the notochord.
mesh_terms: D001921:Brain / Q000000981:diagnostic imaging; D002114:Calcinosis / Q000000981:diagnostic imaging / Q000196:embryology*; D004622:Embryo, Mammalian / Q000473:pathology*; D006801:Humans; D009302:Nasopharyngeal Diseases / Q000000981:diagnostic imaging* / Q000196:embryology / Q000473:pathology; D009305:Nasopharynx / Q000473:pathology; D009672:Notochord / Q000473:pathology*; D011859:Radiography; D014054:Tomography