It is characterized by cystic blood-filled spaces and composed of histiocyte-like cells. A lymphocytic cuff is common. It often simulates a vascular lesion, and was initially described as doing this.<unk>  typically has a chromosomal translocation involving the ATF1 gene -- t(12;16) FUS/ATF1 or t(12;22) EWS/ATF1.
Angiomatoid fibrous histiocytoma
Multinucleate cell angiohistiocytoma
Mast cell sarcoma
Solitary fibrous tumor
Progressive nodular histiocytoma
Langerhans cell sarcoma
Epithelioid sarcoma
Mycetoma