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n. pl. os·te·o·mas or os·te·o·ma·ta (-mə-tə)
A benign tumor composed of bony tissue, often developing on the skull.


n, pl -mata (-mətə) or -mas
(Pathology) a benign tumour composed of bone or bonelike tissue


(ˌɒs tiˈoʊ mə)

n., pl. -mas, -ma•ta (-mə tə)
a benign tumor composed of osseous tissue.
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Noun1.osteoma - a slow growing benign tumor of consisting of bone tissue; usually on the skull or mandible


n osteoma m
References in periodicals archive ?
Albright hereditary osteodystrophy with hypothyroidism, normocalcemia, and normal Gs protein activity: a family presenting with congenital osteoma cutis. Am J Med Genet 1992;43:764-7.
Differential diagnoses include osteoma cutis, calcified lymph nodes or cysts, and areas of calcified necrotic materials such as caseous granulomas in tuberculosis.
Lesional biopsies revealed that the patient had osteoma cutis, a skin condition in which bone ossification (including lamellae, trabecular bone formation, osteocytes, and sometimes marrow) occurs within the dermis.
The clinical differential diagnosis for pilomatricoma in children includes epidermal inclusion cyst, ossifying hematoma, branchial remnant, preauricular sinus, lymphadenopathy, giant cell tumor, chondroma, dermoid cyst, degenerating fibroxanthoma, foreign body reaction, and osteoma cutis [2].
Other entities to be considered in the differential diagnosis include: inclusion cysts, giant cell tumor, foreign body reaction, eccrine spiradenoma, osteoma cutis, trichilemmal cyst, hydrocystoma, basal cell carcinoma, calcification in lymph node, fat necrosis, pyogenic granuloma, lymphadenopathy, fibroxanthoma, chalazion and keratoacanthoma.1
However, the differential diagnosis for lesions with this appearance is wide and includes: sebaceous cysts, ossifying hematomas, giant-cell tumors, chondromas, dermoid cysts, foreign body reactions, degenerating fibroxanthomas, metastatic bone formations and osteoma cutis. (6) There is also a significant radiation burden to take into consideration, especially in children.
The differential diagnosis includes ossifying hematoma, branchial cyst, adenopathy, preauricular cyst, giant-cell tumor, chondroma, fibroxanthoma, foreignbody reaction, and osteoma cutis. (4-7,9,10,13) When a lesion is found over the preauricular area, a tumor of the parotid gland must be ruled out.
El proposito de esta comunicacion es dar a conocer la experiencia con un caso de osteoma cutis en una paciente de 46 anos de edad, quien solicito tratamiento odontologico en las clinicas de la Escuela de Odontologia de la Universidad del Valle.
Osteoma cutis (OC) is a rare benign disorder where osseous nodules form in the reticular layer of normal skin [1].