SATB2 and neoplasm: These cells displayed focal immunoreactivity to smooth muscle actin (Clone 1A4, RTU, Agilent-Dako) and SATB2 (Clone EP281, RTU, Agilent-Dako (Agilent, Frederick, Colorado)), consistent with a bone-forming tumor, with no CD34 (Clone QBEnd-10, RTU, Agilent-Dako) and CD68 (Clone, PG-M1 RTU, Agilent-Dako) positivity.