osteoma


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to osteoma: osteosarcoma

osteoma

[‚äs·tē′ō·mə]
(medicine)
A benign bone tumor, especially in membrane bones of the skull.
References in periodicals archive ?
Following are important features to be cognizant of: (1) virtually any bone can be affected; (2) it commonly involves the spine, where it has a strong propensity to involve the dorsal vertebral elements as opposed to the body; (3) it can sometimes show locally aggressive growth, which correlates mostly with surgical resectability and possibly with specific histologic features such as prominent epithelioid cell morphology ("aggressive osteoblastoma"); (4) other benign tumors such as osteoid osteoma, aneurysmal bone cyst, giant cell tumor of bone, and sino-orbital osteoma can mimic it histologically; and (5) distinguishing it from osteoblastoma-like osteosarcoma, on the basis of careful evaluation of sometimes subtle cytoarchitectural features, is essential to avoid a misdiagnosis.
Conditions that initiate excessive accelerated unilateral mandibular growth after the age of 20 are most often related to an osteochondroma, osteoma (CH type 2), or other rare types of proliferative condylar pathology.
The other findings like hydrocele, enchondroma, osteoma, ischiadic tubercle edema and dilation of the ureter may be interpreted to underline the value of MRI for detection of unexpected pathology of the soft tissues and even the bones in the groin and pelvic area that may account for one aspect of the groin pain (Leander, 2000).
CT of the maxillofacial region is required for patients with an osteoma to rule out Gardner syndrome, which should be considered when a patient has more than one osteoma.
Involvement of the sacrum is extremely rare, and it has also been reported that the diagnosis of osteoid osteoma in the sacrum can be delayed compared with other skeletal sites.
An osteoid osteoma (OO) in the calcaneus (heelbone) of a young female patient was treated in a minimally invasive manner with CT-guided radiofrequency ablation (RFA).
Forty-five consecutive cases of sino-orbital osteoma were identified from the files of the Department of Pathology between March 1986 and January 2008.
Benign osteoblastoma; a category of osteoid--and bone-forming tumors other than classical osteoid osteoma, which may be mistaken for giant-cell tumor or osteogenic sarcoma.
Osteoid osteoma is one of the more common benign bone lesions that classically presents in children and young adults (7-25 years) with nontraumatic pain that is worse in the evening and responds well to aspirin and other anti-inflammatory medications.
For instance the size of the nidus is important in the diagnosis of an osteoid osteoma versus an osteoblastoma (less than 1 cm compared with more than 2 cm respectively).
Key words: osteoma, neoplasia, eclectus, avian, eclectus parrot, Eclectus roratus roratus