title: Cricoid ossification mimicking an impacted foreign body.
abstract: A 54-year-old man complained of severe throat pain and showed subglottic oedema on fibre-optic endoscopy with a distinctly narrowed subglottic space on anteroposterior radiography of the neck and dense linear opacity at the level of the cricoid cartilage on lateral plain radiography. These findings suggested a foreign body just posterior to the cricopharyngeus, but a computed tomography (CT) scan demonstrated a dense calcified ridge on the posterior lamina of the cricoid cartilage but no foreign body.The patient improved symptomatically with systemic antibiotics and topical steroids, and gastrointestinal endoscopy did not detect any foreign body. This is a rare case of vertical ossification of the cricoid lamina masquerading as a foreign body.
authors.affiliation: Department of Otolaryngology, School of Medicine, Kanazawa University, Ishikawa, Japan. wakisaka@med.kanazawa-u.ac.jp
authors.forename: N
authors.initials: N
authors.lastname: Wakisaka
authors.forename: T
authors.initials: T
authors.lastname: Miwa
authors.forename: T
authors.initials: T
authors.lastname: Yoshizaki
authors.forename: M
authors.initials: M
authors.lastname: Furukawa
mesh_terms: D003413:Cricoid Cartilage / Q000000981:diagnostic imaging*; D003937:Diagnosis, Differential; D016099:Endoscopy, Gastrointestinal; D005547:Foreign Bodies / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed / Q000379:methods