JAZF1 rearrangement in a mesenchymal tumor of nonendometrial stromal origin: report of an unusual ossifying sarcoma of the heart demonstrating JAZF1/PHF1 fusion..     ///    "The unique morphology and the presence of a JAZF1/PHF1 rearrangement suggest that this distinctive ossifying sarcoma is not part of a currently established diagnostic entity, representing instead a novel primary cardiac sarcoma. "    ///    We report a distinct primary cardiac ossifying sarcoma that harbored a JAZF1/PHF1 fusion.     ///    "Fluorescence in situ hybridization using a dual-color, single-fusion probe set identified the JAZF1/PHF1 fusion. "