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CASE 79: Malignant Peripheral Nerve Sheath Tumor Located in the Knee
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A patient who underwent unplanned surgery at another center due to a soft tissue mass in the knee, and whose pathology result showed a soft tissue sarcoma with positive surgical margins. We performed bed resection and tibialis posterior tendon transfer on the patient who presented with residual tumor.
Initial Presentation: The initial preoperative MRI shows an irregularly bordered heterogeneous soft tissue mass in the posterolateral aspect of the knee.
Pre-operative: The initial post-operative control MRI shows residual tumor tissue and surrounding edema.
During the operation: Planning to excise the old incision line, peroneal nerve and proximal fibula transection are visible.
During the operation: Clinical appearance of the removed tumor tissue.
During the operation: The image shows the space created after tumor removal, along with muscle coverage following tibial nerve and posterolateral corner repair.
