Case report: Fifteen-year history of deep benign fibrous histiocytoma of the thigh with review of the literature

Abstract

Deep benign fibrous histiocytoma (DBFH) is a rare mesenchymal tumor compared with cutaneous fibrous histiocytoma. As the diagnosis of DBFH may be clinically difficult, the presence of DBFH is usually confirmed after its excision. In this case study, we report a case of a 31-year-old man who lived with a painless mass in his right thigh for 15 years. After its examination by preoperative ultrasound and magnetic resonance imaging, the tumor was completely excised. Further histologic evaluation revealed neoplastic growth composed of proliferating spindle cells forming short fascicles and a storiform pattern. The patient was diagnosed with DBFH on the basis of its intraoperative, radiologic, and histopathologic features. Keywords: Benign fibrous histiocytoma, Soft tissue tumor, DBFH subcutaneous, Thigh