Predicting survival outcomes in dedifferentiated chondrosarcoma: a prognostic factor analysis from a National RegistryTomoya Masunaga, Shinji Tsukamoto, Kanya Honoki, Hiromasa Fujii, Akira Kido, Manabu Akahane, Yasuhito Tanaka, Andreas F. Mavrogenis, Costantino Errani and Akira KawaiSICOT-J, 11 (2025) 16DOI: https://doi.org/10.1051/sicotj/2025011