HMGA2 and mesenchymal cell neoplasm: It is noteworthy that HMGA2 is also involved in gene fusion in a variety of mesenchymal tumors, including lipoma, uterine leiomyoma, aggressive angiomyxoma, pulmonary chondroid hamartoma, soft tissue chondroma, and dedifferentiated liposarcoma [12,13,14,15,16].