However, molecular karyotyping detected an unbalanced rearrangement of the <i>LPP</i> locus, not involving the <i>HMGA2</i> locus, which is the most frequent translocation partner observed in benign mesenchymal tumors such as lipomas (of soft tissue as well as parosteal) and pulmonary chondroid hamartoma. This evidence concerns the gene HMGA2 and mesenchymal cell neoplasm.