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A non-ossifying fibroma (NOF) is a benign bone tumor of the osteoclastic, giant cell-rich tumor type. [1] It generally occurs in the metaphysis of long bones in children and adolescents. [ 2 ] Typically, there are no symptoms unless there is a fracture . [ 2 ]
The most common bone tumor is a non-ossifying fibroma. [4] Average five-year survival in the United States after being diagnosed with bone and joint cancer is 67%. [5] The earliest known bone tumor was an osteosarcoma in a foot bone discovered in South Africa, between 1.6 and 1.8 million years ago. [6]
The cystic fibroma (fibroma cysticum) has central softening or dilated lymphatic vessels. The myxofibroma (fibroma myxomatodes) is produced by liquefaction of the underlying soft tissue. The cemento-ossifying fibroma is hard and fibrous, most frequently seen in the jaw or mouth, sometimes in connection with a fracture or another type of injury.
Fibrous dysplasia of the right zygomatic bone (left). Corresponding T2-weighted MRI (left) and CT (right) of the same patient. Fibrous dysplasia is a mosaic disease that can involve any part or combination of the craniofacial, axillary, and/or appendicular skeleton. [7]
Osteofibrous dysplasia is a rare, benign non-neoplastic condition with no known cause. It is considered a fibrovascular defect. Campanacci described this condition in two leg bones, the tibia and fibula, [1] and coined the term. This condition should be differentiated from nonossifying fibroma and fibrous dysplasia of bone.
Metaphyseal tumors or lesions include osteosarcoma, chondrosarcoma, fibrosarcoma, osteoblastoma, enchondroma, fibrous dysplasia, simple bone cyst, aneurysmal bone cyst, non-ossifying fibroma, and osteoid osteoma. [5] One of the clinical signs of rickets that doctors look for is cupping and fraying at the metaphyses when seen on X-ray.
Image credits: viralsumo1 #6. 1. Gentle Admittedly men are quite strong and can sometimes come off as a bull in a China shop. When a man is considerate and gentle, it genuinely makes my heart melt.
Jaffe–Campanacci syndrome is one of the disorders associated with café au lait macules (CALMs). Presentations may include intellectual disability, disseminated non-ossifying fibromas of the long bones and jaw, hypogonadism or cryptorchidism, or giant cell granulomas of the jaw.