Atypical Cartilaginous Tumor/Chondrosarcoma, Grade 1

**Semantic type:** Neoplastic Process

**Definition:** A low-grade chondrosarcoma characterized by the presence of moderate cellularity, hyperchromatic and plump nuclei of uniform size, and occasional binucleated cells. Mitotic figures are absent.

**Synonyms:** - ACT/CS1 - Atypical Cartilaginous Tumor/Grade I Chondrosarcoma