30 year old female with a history of myxoid liposarcoma presents for evaluation after excision of this lesion. Markers were placed on the skin surface and the mid and distal thigh posteriorly, presumably denoting the site of scarring. The previously seen soft tissue mass in the posterolateral distal thigh has been resected. Band like scarring traverses the overlying subcutaneous fat. The biceps femoris has been resected distally. Crescentic intermediate signal intensity tissue extends from the aforementioned subcutaneous scar to the posterior margin of the vastus lateralis margin which likely represents additional scarring. There is a small collection of fluid signal intensity within this scar with peripheral enhancement that we suspect represents a small seroma. It is elongated and measures approximately 1cm in the transverse dimension and 5.5 cm in the cranial-caudal direction. Although there is mild enhancement of the aforementioned scar tissue following gadolinium administration we see no discrete mass to suggest tumor recurrence. The sciatic nerve abuts the margin of the aforementioned scar tissue, but we see no abnormal signal intensity within the nerve. Bone marrow signal intensity is normal. There is a small knee joint effusion with synovitis, which is nonspecific.
Surgical changes of myxoid liposarcoma excision including scarring and a small seroma, but we see no specific findings of tumor recurrence.