Bipolar radiofrequency ablation of tibialchondroblastomas: A report of three cases

Figure 2 Chondroblastoma of the left tibia in a 13-year-old female. A, B: Frontal radiograph and axial computed tomography (CT) image of the left knee showing a geographic lytic lesion with sclerotic margins (arrow) involving the proximal epiphysis of the tibia; C: Coronal non-contrast computed resonance image showing the lesion with thinning of the subchondral bone superiorly (arrow) and extension of the lesion into the metaphysis inferiorly; D: CT image obtained at the time of the procedure showing the radiofrequency electrode placed in the lesion. Access tracks from a prior biopsy are also seen; E: Follow-up image after 6 mo showing increased mineralizaion of the matrix with no appreciable change in lesion size.