Cemento-Ossifying Fibroma

**Semantic type:** Neoplastic Process

**Definition:** A well circumscribed lesion of the bone, most frequently arising from the posterior mandible. It is characterized by the presence of fibrous tissue and a mineralized component which may be woven bone, lamellar bone, or cementum-like material. Complete removal is recommended, since it continues to enlarge if left untreated.

**Synonyms:** - COF - Cementifying Fibroma - Cementifying fibroma - Cemento-ossifying fibroma - FIBROMA, CEMENTO-OSSIFYING, BENIGN - Fibroma, Cementifying/Ossifying