A rare presentation of benign fibrous histiocytoma in the maxilla.

Abstract

Fibrous histiocytoma is a soft-tissue tumor that may present as a fibrous mass anywhere in the human body. The involvement of the oral cavity is rare. We here report a case of benign fibrous histiocytoma localized in the maxilla. A 25-year-old male presented with a slowly increasing large painless mass over the left side of the upper jaw for 5 months. The swelling was of gradual onset, slowly progressive and was not associated with pain, tenderness, or discharge. The radiographic appearance showed a multilocular mixed radiodense, radiolucent lesion in the left posterior maxilla. The histopathological report showed connective tissue component having streaming fascicles of spindle-shaped cells showing a storiform pattern. Many areas showed foamy histiocytes along with few multinucleated giant cells. The cells were appearing benign without any appearance of atypia. The tumor cells were positive for CD-68 and vimentin and negative for CD-34 and S100. The lesion was excised under general anesthesia.