Chondrosarcoma, a rare cancer that develops from cartilage cells, occurs mainly in the bones but can also appear in the soft tissue of the pelvis, hip and shoulder. Unfortunately, these cancers are highly resistant to both chemotherapy and radiation, and no successful adjuvant therapies currently exist. As such, surgical treatment and resection remain the mainstays of management for patients with these tumors. This concise text is a comprehensive presentation of the current knowledge regarding the development, diagnosis and management of chondrosarcomas. Part I discusses pathology, molecular biology and imaging features of chondrosarcomas. The different types of skeletal and extraskeletal tumors are presented in detail in part