Left leg mass just proximal to the knee on the medial thigh.
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Oval-shaped lesion within the subcutaneous fat at the anterior aspect of the distal left thigh located in the interface between the subcutaneous fat planes and external muscle fascia measuring 3 x 2.3 x 4 cm. It causes mass effect and compression on the vastus medialis muscle showing T1 hypointense signal and T2 hyperintense signal and postcontrast enhancement. Focal central area of nonenhancement is noted probably representing necrotic or cystic portion.
Excisional biopsy of the mass was performed, with positive margins. Re-resection was performed with tumour free margins.
Pathology from excisional biopsy of this left thigh lesion demonstrated: myxofibrosarcoma (myxoid malignant fibrous histiocytoma).