Importance of adequate and timely diagnosis in non-neoplasic bone lesions: case report

Abstract

Non-ossifying fibroma is defined as a bone lesion of non-neoplasic origin, characterized by the presence of fibrous tissue in eddies, it differs from the fibrous cortical defect due to its size, being the result of the periosteal cortical bone development defect that leads to failure of ossification. We present a case of a 12-year-old female adolescent who comes to this center presenting knee pain, claudication while walking and reduced range of motion of the left knee and that in the CT scan shows a hyper-enhanced lesion, hypointense on T1, hyperintense on T2, in addition to cortical lesion at the level of both distal femurs. Planning is carried out for taking a percutaneous biopsy whose report reports a non-ossifying fibroma of the bilateral distal femur, and it is decided to perform surgery on the right distal femur, with good results, in the case the clinical and radiographic characteristics of the patient and the resolution of this are described.