odontogenic fibroma

odontogenic fibroma,

a benign neoplasm of the jaw derived from the embryonic part of the tooth germ, dental follicle, or dental papilla or from the periodontal membrane.

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fibroma (fībrō´m),

n a benign mesenchymal tumor composed primarily of fibrous connective tissue.

fibroma, ameloblastic,

n a mixed tumor of odontogenic origin characterized by the simultaneous proliferation of both the epithelial and mesenchymal components of the tooth germ without the production of hard structure.

fibroma, calcifying,

n See fibroma, ossifying.

fibroma, cementifying,

n an intrabony lesion not associated with teeth, composed of a fibrous connective tissue stroma containing foci of calcified material resembling cementum; a rare odontogenic tumor composed of varying amounts of fibrous connective tissue with calcified material resembling cementum. Central lesion of the jaws.

n a fibrous bone tumor, usually benign, found most commonly in children and young adults.

fibroma, irritation,

n a localized peripheral, tumorlike enlargement of connective tissue caused by prolonged local irritation and usually seen on the gingiva or buccal mucosa.

Irritational fibroma.

fibroma, neurogenic,

n See neurilemoma; neurofibroma.

fibroma, odontogenic,

n a central odontogenic tumor of the jaws, consisting of connective tissue in which small islands and strands of odontogenic epithelium are dispersed. A mesodermal odontogenic tumor composed of active dense or loose fibrous connective tissue; contains inactive islands of epithelium.

fibroma, ossifying,

n a benign neoplasm of bone characterized by unilateral swelling and fibroblastic and osteoblastic activity in marrow spaces. An aggressive variant of this lesion has been described and is termed juvenile ossifying fibroma or juvenile active ossifying fibroma.

(benign periapical fibroma, fibrous dysplasia, first-state cementoma, focal osseous dysplasia, traumatic osteoclasia),
n a benign connective tissue mass formed at the apex of a tooth with a normal pulp.

fibroma, peripheral odontogenic,

n a fibrous connective tissue tumor associated with the gingival margin and believed to originate from the periodontium. Often contains areas of calcification. Localized form of fibromatosis gingivae.

fibroma, peripheral ossifying,

n a type of reactive gingival growth that appears most commonly in teenagers and young adults. They can be surgically removed, but rate of recurrence is high.

fibroma, with myxomatous degeneration,

n See fibromyxoma.

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fibroma

a tumor composed mainly of fibrous or fully developed connective tissue. Their common association with particular sites, e.g. nasal, genital, laryngeal, falx cerebri, results in some well-identified clinical syndromes. See also interdigital fibroma, myxomatosis.

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ameloblastic fibroma

an odontogenic fibroma, marked by simultaneous proliferation of both epithelial and mesenchymal tissue, without formation of enamel or dentine. A rare tumor recorded in calves and young cats. It behaves like an ameloblastoma. Called also fibroameloblastoma.

cementifying fibroma

cementoblastoma; a tumor usually occurring in the mandible consisting of fibroblastic tissue containing masses of cementum-like tissue.

chondromyxoid fibroma of bone

a benign slowly growing tumor of chondroblastic origin, usually affecting the long bones.

cystic fibroma

one that has undergone cystic degeneration.

fibroma myxomatodes

myxofibroma; a fibroma containing myxomatous tissue.

nonossifying fibroma

a rare benign tumor of bone derived from fibrous tissue in the bone cortex.

nonosteogenic fibroma

a degenerative and proliferative lesion of the medullary and cortical tissues of bone.

odontogenic fibroma

a benign tumor of the jaw arising from the embryonic portion of the tooth germ, the dental papilla, or dental follicle, or later from the periodontal membrane.

ossifying fibroma, ossifying fibroma of bone

a benign, relatively slow-growing, central bone tumor, usually of the jaws, especially the mandible, which is composed of fibrous connective tissue within which bone is formed.

Shope rabbit fibroma

a transmissible disease of rabbits caused by a poxvirus found only in the tumors. The virus is closely related to that of myxomatosis. Clinically there are one or more subcutaneous tumors which grow rapidly and then regress in the domestic rabbit but grow very slowly in the cottontail rabbit. Fibroma virus has been used as a vaccine against myxomatosis. See also berry-dedrick phenomenon.

soft fibroma

see fibrovascular papilloma.

squirrel fibroma

see squirrel fibroma.