Cemento-Osseous Dysplasia

**Semantic type:** Disease or Syndrome

**Definition:** A non-neoplastic fibro-osseous lesion of the tooth-bearing regions of the gnathic bones. It is characterized by a variably cellular fibrous stroma with areas of swirling and/or loose collagen. Within the stroma are mineralizing tissues consisting of osteoid, bone, and cementum-like material. As the lesions mature, they become increasingly calcified. (WHO 2017)

**Synonyms:** - COD - Cemental Dysplasia - Cementoma - Cementoma, NOS - Osseous Dysplasia