dysplasia fibro-osseous lesion Lesion of bone showing accelerated osteoclastic bone resorption coupled with fibroplasia. Later stages show proliferation of osteoblasts. MPATH:590 The benign fibro-osseous lesions (BFOL) represent a clinically diverse group of disorders of bone that share similar histopathologic features. As a group, they are relatively common in the craniofacial complex, especially the jaws. Common in some inbred strains notably B6C3F1 females. Note that many of the synonyms have been used historically and may not be accurate. See: Albassam MA, Courtney CL (1996) Nonneoplastic and neoplastic lesions of the bone. In: Mohr U, Dungworth DL, Capen CC, Carlton WW, Sundberg JP, Ward JM (eds) Pathobiology of the aging mouse. Vol 2. Musculoskeletal system. ILSI Press, Washington D.C., pp 425-437. AND Albassam MA, Wojcinski ZW, Barsoum NJ, Smith, GS (1991) Spontaneous fibro-osseous proliferative lesions in the sternums and femurs of B6C3F1 mice. Vet Path 28: 381-388. fibrous dysplasia fibrous osteodystrophy mouse_pathology.ontology osteodysplasia osteodystrophy osteofibrosis