Periosteal Chondrosarcoma

**Semantic type:** Neoplastic Process

**Definition:** A chondrosarcoma arising from the surface of bone. It is characterized by a lobulated growth pattern, high mitotic activity, myxoid stroma formation, and necrotic changes. It occurs in adults. Clinical presentation includes pain, and sometimes swelling.

**Synonyms:** - Juxtacortical Chondrosarcoma - Juxtacortical chondrosarcoma - Periosteal chondrosarcoma