CASE 72: Myxofibrosarcoma located around the knee.

An unplanned procedure was performed at another hospital due to a mass in the knee area, and the pathology result showed a soft tissue sarcoma with positive surgical margins. The patient underwent bed resection (removal of residual tumor with clean margins) surgery, and following wound healing, the patient was referred to radiation oncology.

Initial Presentation: MRI shows an irregularly bordered heterogeneous soft tissue mass on the medial side of the knee.

Pre-operative: The MRI shows residual tumor tissue from the first surgery.

During the operation: Planning to remove the old incision line, the gap created after tumor removal, and wound closure are shown.