2024年12月4日 · Fibrous cortical defects are benign lytic bone lesions, and, along with fibrous dysplasia share the F in the popular mnemonic FEGNOMASHIC. They typically occur in the metaphysis or diametaphyseal junction and appear as small (<2-3 cm) lucent defects within the cortex that over time become sclerotic as they heal.

2025年1月10日 · The terms ‘fibrous cortical defect’ (confined to the cortex), ‘metaphyseal fibrous defect’ or ‘benign fibrous histiocytoma' are no longer recommended 1. Epidemiology. Non-ossifying fibromas are very common in children and adolescents and are considered the most common benign tumor 1-5.

Fibrous cortical defects (FCDs) are benign bony lesions which are usually small in size, occur in skeletally immature children between age 2-15 years, and are usually asymptomatic. They are typically seen in the distal femur, proximal and distal tibia.

2023年7月28日 · Fibroxanthoma of bone and metaphyseal fibrous defect are terms that have been previously used to encompass both non-ossifying fibroma and fibrous cortical defect or synonymous with non-ossifying fibroma 1-4.

fibrous cortical defect (<2 cm) Both are pathologically identical. Non-ossifying fibromas have the following features (all shown here): present in adolescents and young adults. commonest location is the femur and tibia. dia-metaphyseal in location. eccentric with mild expansion. well defined lucent lesion with a sclerotic margin

2024年12月19日 · tibia: most frequent site 5 (90% of the time); there is a predilection for the anterior tibial cortex. femur: occurs in a diaphysial location. mandible and maxilla: these are examples of cementum-poor cemento-ossifying fibromas 2 (see WHO classification scheme for odontogenic tumors)

2024年9月7日 · Cortical desmoids, also known as cortical avulsive injuries, Bufkin lesion or distal femoral cortical defects/irregularities, are a benign self-limiting entity that are common incidental findings. This is a classic "do not touch" lesion, and should not be confused with an aggressive cortical/periosteal process (e.g. osteosarcoma).

2024年12月23日 · Fibrous dysplasia (FD) is a developmental benign medullary fibro-osseous process characterized by the failure to form mature lamellar bone and arrest as woven bone that can be multifocal. It can affect any bone and occur in a monostotic form involving only one bone or a polyostotic form involving multiple bones.

Plain film features are characteristic of a fibrous cortical defect. It is a benign bony lesion that is usually small in size, occurs in skeletally immature children between age 2-15 years, and usually asymptomatic. It is typically seen in the distal femur, proximal and distal tibia. It is one of the skeletal “Don’t touch” lesions.

2024年5月2日 · Osteofibrous dysplasia is a benign fibro-osseous cortical lesion that occurs almost exclusively in the tibia and fibula. It is most commonly seen in the mid-diaphysis of the tibia.