Bipolar radiofrequency ablation of tibialchondroblastomas: A report of three cases

Figure 1 Chondroblastoma of the left tibia in a 14-year-old male. A, B: Plain radiograph and non-contrast computed tomography (NCCT) axial image show a geographic lytic lesion with sclerotic margins and foci of matrix calcification in the medial tibial epiphysis; C: NCCT coronal image shows thinning of the subchondral bone superiorly (white arrow) and extension of the lesion to thephyseal plate inferiorly (black arrow) which is non-fused; D: Sagittal short-tau inversion-recovery magnetic resonance (MR) image showing heterogeneous signal intensity of the lesion with surrounding bone marrow and soft tissue oedema (asterisk); E: Follow-up CT image after 6 mo showing increased mineralization of the matrix with no appreciable change in lesion size.