title: Osseous choristoma in child with strong vomiting reflex.
abstract: Osseous lesions within soft tissue such as the tongue are extremely rare. Here, we report an osseous choristoma on the posterior portion of the tongue in a patient with a strong vomiting reflex. The patient was an 11-year-old boy who presented with the chief complaint of swelling on the posterior portion of the tongue. A pedunculated tumor 8-mm in diameter with distinct borders was observed slightly to the right of the midline of the dorsum of the tongue and slightly anterior to the circumvallate papillae. The clinical diagnosis was a right lingual circumvallate papilla fibroma. A further examination conducted under general anesthesia in July 2012 confirmed a pedunculated and solid mass in the area of the circumvallate papillae. As these results suggested a benign tumor, the mass was resected. Histopathological findings on harvested bone and fibrous connective tissue covered with a layer of squamous cells led to a diagnosis of osteoma. At 18 months postoperatively, there were no signs of recurrence.
authors.affiliation: Department of Oral and Maxillofacial Surgery, Tokyo Dental College.
authors.forename: Masae
authors.initials: M
authors.lastname: Yamamoto
authors.forename: Masashi
authors.initials: M
authors.lastname: Migita
authors.forename: Satoru
authors.initials: S
authors.lastname: Ogane
authors.forename: Masato
authors.initials: M
authors.lastname: Narita
authors.forename: Nobuharu
authors.initials: N
authors.lastname: Yamamoto
authors.forename: Takashi
authors.initials: T
authors.lastname: Takaki
authors.forename: Kenichi
authors.initials: K
authors.lastname: Matsuzaka
authors.forename: Takahiko
authors.initials: T
authors.lastname: Shibahara
mesh_terms: D001842:Bone and Bones / Q000473:pathology*; D002648:Child; D002828:Choristoma / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005350:Fibroma / Q000175:diagnosis; D006801:Humans; D008297:Male; D010016:Osteoma / Q000175:diagnosis*; D012018:Reflex / Q000502:physiology; D014060:Tongue Diseases / Q000175:diagnosis*; D014062:Tongue Neoplasms / Q000175:diagnosis*; D014839:Vomiting / Q000503:physiopathology