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  1. ... and cartilage tumors include the following types: Extraskeletal mesenchymal chondrosarcoma . This type of bone and cartilage tumor often affects young adults and occurs in the head and neck. It ...
  2. ... 14 years), late adolescence (15–19 years), young adults (20–24 years), and adults (older than 24 years). Young children had the ... of Primary Malignant Bone Sarcoma in Children and Adults: A Single-Center Retrospective Study of 205 Patients. ...