Secondary Central Atypical Cartilaginous Tumor/Chondrosarcoma, Grade 1

**Semantic type:** Neoplastic Process

**Definition:** Central atypical cartilaginous tumor/chondrosarcoma, grade 1 arising in the medulla of bone in association with a pre-existing enchondroma.

**Synonyms:** - Secondary Conventional Central Atypical Cartilaginous Tumor/Chondrosarcoma, Grade 1