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a loculated osteolytic focus of cellular fibrous tissue, which slightly expands a bone, usually near the end of a long bone in older children; similar to fibrous cortical defect, although larger.
a sharply circumscribed, eccentrically located lesion in the metaphyses of long bones in children. Microscopic examination reveals whorl patterns of spindle cells, fibrous tissue, numerous xanthoma cells, and occasional giant cells.
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.
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.
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.
one that has undergone cystic degeneration.
myxofibroma; a fibroma containing myxomatous tissue.
a rare benign tumor of bone derived from fibrous tissue in the bone cortex.
a degenerative and proliferative lesion of the medullary and cortical tissues of bone.
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.
see fibrovascular papilloma.
see squirrel fibroma.