[Updates and interpretations of 2017 NCCN guidelines for bone cancer].

The NCCN guidelines for bone cancer are generally updated 1-2 times one year, the contents include diagnosis, treatment guidelines and the latest developments. The latest version of 2017 guideline of bone cancer is released recently. It includes multidisciplinary treatment of common primary bone cancer including diagnosis, surgery, drugs and radiotherapy. It covers osteosarcoma, chondrosarcoma, Ewing's sarcoma, giant cell tumor of bone and chordoma. In this article, the core contents and the updates are illustrated.