Fibrous Histiocytoma of Bone

**Semantic type:** Neoplastic Process

**Definition:** A rare, benign neoplasm usually arising from the non-metaphyseal regions of long bones or pelvis. It is characterized by the presence of fibroblastic spindle cells arranged in a whorled storiform pattern, osteoclast-like giant cells, foam cells, inflammatory cells, hemosiderin deposition and stromal hemorrhage.

**Synonyms:** - Benign Fibrous Histiocytoma of Bone