Exostosis

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Related to exostoses: osteochondroma, cholesteatoma, osteomas

exostosis

[‚ek·sə′tō·səs]
(medicine)
A benign cartilage-capped protuberance from the surface of long bones but also seen on flat bones, caused by chronic irritation as from infection, trauma, or osteoarthritis.

Exostosis

 

a benign bony or bony-cartilaginous growth on the surface of a bone in the form of a linear or round mass. Exostoses develop mainly in males during childhood and adolescence, on the femur, tibia, humerus, and other bones. They cease to enlarge when bone growth ends. They usually do not cause complaints. However, fairly large exostoses compress muscles and nerve trunks, causing pain and hampering movement. The principal means of diagnosing exostoses is by X ray.

Exostoses are removed surgically if symptoms are pronounced or if the exostoses suddenly begin to grow rapidly in adults. Individuals suffering from exostoses are kept under clinical observation.

References in periodicals archive ?
According to POOL & CARRIG (1972), the random distribution of exostoses may be related to a viral cause of the tumor.
Key words: Multiple Osteochondromatosis (MO), Hereditary Multiple Exostoses (HME), Chondrosarcoma, Exostosin Genes
Concurrence of torus palatinus with palatal and buccal exostoses.
Pain from the postero-superior aspect of the calcaneous bone often relates to prominent exostoses on the superior border of the bone, sometimes known as a Hagland deformity, or a "pump bump".
Additionally, a prominent iliopectineal ridge or exostoses can cause snapping.
Hereditary multiple exostoses (EXT); mutational studies of familial EXT1 cases and EXT-associated malignacies.
27,28,45-49) Symptoms can be initiated simply by bony impingement or by thickened and inflamed soft tissue caught between exostoses on the tibia and talus.
These bony prominences, otherwise known as exostoses, can present as painless bony deformities or as a complication of the bony growth.
Other structures which are in close relation to the subclavian vein in and around the thoracic outlet include: pectoralis minor and supraspinatus muscles, coracocostal ligament, osseous exostoses, cervical ribs, fibrous cords.
Swimming and humid environments are risk factors for otitis externa, and repeated cold water exposure is a risk for the development of external auditory exostoses.
Case report, multiple cartilaginous exostoses in a dog.