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Related to nonossifying fibroma: Fibrous dysplasia, Ober test


A benign tumor composed primarily of fibrous connective tissue. Also known as fibroid tumor.



a mature benign tumor of connective tissue, which can occur in any part of the body. Fibromas may be diffuse or encapsulated, depending on the nature of their growth. Fibroblasts are the source of fibromas, hence their other name, fibroblastomas. The symptoms and the course of a fibroma depend on the site and the rate of growth. Malignant degeneration sometimes occurs. Fibromas are treated surgically.

References in periodicals archive ?
Stress fractures of the distal femur involving small nonossifying fibromas in young athletes.
Nonossifying fibroma is one of the most common benign fibrous lesions.
The histologic features of nonossifying fibroma with spindle stromal cells, fibrosis, and aggregates of foamy macrophages allow easy separation from GCTs.
Fibrous cortical defect (FCD) and nonossifying fibroma (NOF) describe the same histologically benign entity.
These include aneurysmal bone cyst, chondroblastoma, nonossifying fibroma, giant cell reparative granuloma, pigmented villonodular synovitis, giant cell tumor of tendon sheath, and giant cell-rich osteosarcoma.
The histogenesis and classification of fibrohistiocytic lesions involving bone and containing an admixture of fibrous tissue, foam cells, and giant cells are confusing and include several overlapping entities, such as metaphyseal fibrous defect, nonossifying fibroma, fibrous cortical defect, fibroxanthoma, and benign fibrous histiocytoma (BFH) of bone.
The nonossifying fibroma (ie, metaphyseal defect) is more cellular with a storiform pattern and characteristically has multinucleated giant cells, xanthoma cells, and hemosiderin pigment--loaded macrophages.