Malignant round cell tumor of bone with EWSR1-NFATC2 gene fusion.    ///    Malignant round cell tumor of bone with EWSR1-NFATC2 gene fusion..     ///    "Here, we report a malignant round cell tumor of bone with an EWSR1-NFATC2 fusion gene."    ///    "Here, we report a malignant round cell tumor of bone with an EWSR1-NFATC2 fusion gene. "    ///    This report builds upon the unusual morphological and clinical presentation of bone neoplasms containing an EWSR1-NFATC2 fusion gene.. 