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Fig. 4 | Cancer Imaging

Fig. 4

From: Use of percutaneous microwave ablation for the treatment of bone tumors: a retrospective study of clinical outcomes in 47 patients

Fig. 4

A 46-year-old woman with enchondroma of the right femur. a-b Preoperative anteroposterior (a) and lateral (b) plain radiographs show a central bone lesion with local high-density shadows in the distal femur (yellow arrow). c-d Preoperative coronal (c) and axial (d) CT images demonstrate the mass as a high-density lesion without a definite boundary in the distal femur (yellow arrow). No obvious periosteal reaction or soft tissue masses were found in the local cortex. e-f Preoperative sagittal T1-weighted (e) and sagittal STIR sequence (f) images show a central lesion with low signal intensity on T1WI and heterogeneous high signal intensity on STIR (yellow arrow). g-h Intraoperative X-rays showing the MWA procedure (yellow arrow). Subsequently, endoscopic curettage of the tumor was performed. i-k The remaining bony cavity was packed with injectable artificial (i, yellow arrow) bone under the guidance of fluoroscopy (k, yellow arrow). l-m At the 5-month follow-up visit, solid fusion of the bone graft at the distal femur without tumor recurrence was observed. n The histopathological biopsy results (hematoxylin and eosin, original magnification 40×) confirmed the bone lesion as an enchondroma

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