Fibrous Histiocytoma, also known as histiocytoma, benign fibrous, is related to malignant inflammatory fibrous histiocytoma and tenosynovial giant cell tumor. An important gene associated with Fibrous Histiocytoma is ATF1 (Activating Transcription Factor 1), and among its related pathways/superpathways are Innate Immune System and Cytokine Signaling in Immune system. The drugs Cyclophosphamide and Etoposide have been mentioned in the context of this disorder. Affiliated tissues include skin and bone, and related phenotypes are cellular and normal