Male, 7 years old. Reason: evaluate proximal fibula radiographic abnormality. May need altered field of view History: knee pain x 6 months. slow onset. no trauma. BONE AND MARROW: The previously identified lesion along the medial aspect of the proximal fibular metaphysis is largely uniformly low signal on T1 sequences, and low signal on T2 sequences. No evidence of enhancement. The lesion arises in the fibular cortex, with discrete cortical sclerotic margins. There is no extension beyond the minimally expanded cortical margin and no adjacent soft tissue component is identified. No periosteal reaction. The bone marrow signal adjacent to the lesion is normal and no additional findings to suggest an associated fracture. Marrow and cartilage signal elsewhere is normal.MENISCI AND LIGAMENTS: No significant abnormality noted.SYNOVIUM: No significant abnormality noted.MUSCULATURE: No significant abnormality noted.ADDITIONAL
Proximal fibular lesion with signal characteristics as described above, which remains most compatible with an uncomplicated benign nonossifying fibroma given the absence of additional abnormality. No findings to account for the patient's pain in the absence of an associated fracture or other abnormalities within the knee.