Myxofibrosarcoma - intermediate-high grade

Case contributed by Domenico Nicoletti

Presentation

Nodule hard and painful, with rapid growth.

Patient Data

Age: 60 years
Gender: Female

Focal abnormal infiltration high signal along the deep muscular fascia between the muscle fibers with “tail sign”.

The lesion has an isointense signal in T1, weakly hyperintense in T2 and hyperintense in the STIR sequences.

After contrast, it shows intense contrast enhancement.

Annotated image

Tail sign. 

Histological report after surgical removal

Case Discussion

Infiltrative growth pattern or tail growth, a primary feature of superficial myxofibrosarcoma and is associated with a high risk of positive margins and local recurrence.

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