EWSR1 and sarcoma: Angiomatoid fibrous histiocytoma, primary pulmonary myxoid sarcoma, and myoepithelial tumours of soft tissue are exceptionally rare forms of sarcoma that harbour translocations of the EWSR1 gene (EWSR1-CREB, EWSR1-ATF1) or the FUS gene (FUS-AFT1).