313 results
Article
Osteoma
Osteomas are benign bone tumors that most commonly occur in the head. When occurring in the medullary cavity osteomas are called bone islands 5.
Terminology
Osteoma is the preferred terminology with ivory exostosis, parosteal osteoma, and maxillary/mandibular torus not recommended per the WHO ...
Article
Osteoid osteoma
Osteoid osteomas are benign bone-forming tumors that typically occur in children (particularly adolescents). They have a characteristic lucent nidus <1.5 or 2 cm and surrounding osteosclerotic reaction, which classically causes night pain that is relieved by the use of NSAIDs.
Epidemiology
Ost...
Article
Osteoma cutis
Osteoma cutis, or cutaneous ossification, is the formation of bone within the skin.
Clinical presentation
Primary osteoma cutis is an idiopathic, benign, non-invasive condition that is usually asymptomatic 1. It is often detected incidentally radiographically, most commonly in facial and scalp...
Article
Choroidal osteoma
Choroidal osteomas are rare benign calcific masses of the globe.
Epidemiology
Choroidal osteomas are typically found in young Caucasian women 1. A number of familial cases have been reported 3.
Clinical presentation
These lesions are usually unilateral (75%), and result in painless and gra...
Article
Dural osteoma
Dural osteomas are a cause of focal intracranial calcification (colloquially known as "brain stones"). They are difficult to differentiate from ossified "burnt out" meningiomas and ossification of the falx. Some reports are actually contradictory 1,4, suggesting that at least some lesions have b...
Article
Paranasal sinus osteoma
Paranasal sinus osteomas are common benign tumors, usually found incidentally.
For a general discussion, please see the main osteoma article.
Epidemiology
Osteomas are commonly found in patients undergoing imaging of the sinuses, appearing in up to 3% of CT examinations of the paranasal sinus...
Article
Skull vault osteoma
Skull vault osteomas are benign primary bone tumors that are commonly incidentally discovered. They are less common than paranasal sinus or mandibular osteomas.
Clinical presentation
Skull vault osteomas are typically asymptomatic but may present as painless, slow-growing masses or with compr...
Article
External auditory canal osteoma
External auditory canal osteomas are rare focal pedunculated bony overgrowths of the osseous external auditory canal.
Radiographic features
solitary pedunculated bony overgrowth of the external auditory canal usually at the bony cartilaginous junction
unilateral
large lesions may be associat...
Article
Double density sign (osteoid osteoma)
The double density sign, also sometimes clumsily referred to as the hotter spot within hot area sign, is a bone scan sign of an osteoid osteoma.
It refers to a central focus of intense uptake (the nidus) within a surrounding lower, but nonetheless increased uptake, rim.
See also
double densit...
Case
Osteoid osteoma
Published
04 Oct 2022
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Skull osteoma
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03 Jan 2024
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CT
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Osteoid osteoma
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21 Feb 2014
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Osteoid osteoma
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19 Nov 2013
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Fluoroscopy
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Frontal osteoma
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03 Aug 2013
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Osteoid osteoma
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10 Aug 2020
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Osteoid osteoma
Published
24 May 2017
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X-ray
Nuclear medicine
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Osteoma with pneumocephalus
Published
13 Aug 2011
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MRI
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Mandibular osteoma
Published
26 Apr 2024
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X-ray
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Osteoid osteoma
Published
14 Apr 2016
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MRI
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Osteoid osteoma
Published
06 May 2021
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CT
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