WordNet

a slow growing benign tumor of consisting of bone tissue; usually on the skull or mandible

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/07/08 16:18:53」(JST)

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An osteoma (plural: "osteomata") is a new piece of bone usually growing on another piece of bone, typically the skull. It is a benign tumor.

When the bone tumor grows on other bone it is known as "homoplastic osteoma"; when it grows on other tissue it is called "heteroplastic osteoma".

Osteoma represents the most common benign neoplasm of the nose and paranasal sinuses. The cause of osteomata is uncertain, but commonly accepted theories propose embryologic, traumatic, or infectious causes. Osteomata are also found in Gardner's syndrome. Larger craniofacial osteomata may cause facial pain, headache, and infection due to obstructed nasofrontal ducts. Often, craniofacial osteoma presents itself through ocular signs and symptoms (such as proptosis).^[1]

Variants

"Osteoma cutis, but there is currently no way of detecting if and when this is likely to occur.
"Fibro-osteoma"
"Chondro-osteoma"

Osteoma of the frontal sinus seen on x-ray
Osteoma of the frontal sinus on CT

References

^ Michael S. Schwartz, MD; Dennis M. Crockett, MD. "Management of a Large Frontoethmoid Osteoma with Sinus Cranialization and Cranial Bone Graft Reconstruction". International Journal of Pediatric Otorhinolaryngology.

External links

BoneTumor
radio/498 at eMedicine - Osteoid osteoma
derm/301 at eMedicine - Osteoma cutis
Humapth #4724 (Pathology images)

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UpToDate Contents

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1. 小児および思春期における良性骨腫瘍：概要 benign bone tumors in children and adolescents an overview
2. 成人における難聴の病因 etiology of hearing loss in adults
3. ガードナー症候群 gardner syndrome
4. 小児および思春期における腰痛：原因の概要 back pain in children and adolescents overview of causes
5. 小児における股関節痛の概要 overview of hip pain in childhood

English Journal

Radiofrequency ablation under 3D intraoperative Iso-C C-arm navigation for the treatment of osteoid osteomas.

Yu F1, Niu XH1, Zhang Q1, Zhao HT1, Xu LH1, Deng ZP1.
The British journal of radiology.Br J Radiol.2015 Dec;88(1056):20140535. doi: 10.1259/bjr.20140535. Epub 2015 Sep 29.
OBJECTIVE: To evaluate the efficacy of intraoperative three-dimensional (3D) Iso-C C-arm-navigated percutaneous radiofrequency ablation (RFA) of osteoid osteomas.METHODS: 35 patients (20 males and 15 females) with osteoid osteomas underwent treatment with intraoperative 3D Iso-C C-arm navigation-gui
PMID 26415989

Osteoid osteoma of the foot and ankle-A systematic review.

Jordan RW1, Koç T2, Chapman AW3, Taylor HP4.
Foot and ankle surgery : official journal of the European Society of Foot and Ankle Surgeons.Foot Ankle Surg.2015 Dec;21(4):228-34. doi: 10.1016/j.fas.2015.04.005. Epub 2015 May 8.
BACKGROUND: Osteoid osteomas are responsible for 10% of benign bone tumours. Treatment typically involves surgical excision or radio frequency ablation. The aim of this systematic review is to evaluate reported cases of foot and ankle osteoid osteomas.METHODS: We conducted a systematic review of the
PMID 26564722

Sino-Orbital Osteoma With Osteoblastoma-Like Features.

McCann JM1, Tyler D Jr2, Foss RD3.
Head and neck pathology.Head Neck Pathol.2015 Dec;9(4):503-6. doi: 10.1007/s12105-015-0613-5. Epub 2015 Feb 8.
An 18 year old male presented with worsening headaches, pain with ocular movement and swelling that involved the left anterior periorbital and frontal sinus region. Radiographic images revealed a polypoid bony mass of mixed radiodensity extending into the left and right frontal sinuses. Histologic
PMID 25663319