15岁男生基因突变患骨肉瘤，休学抗癌三年，其母称孩子近日离世 “妈妈的世界彻底破碎了”，医生曾建议截肢，勉强保肢后又复发，本已收到入学通知书，准备开启新的生活（编辑：黎晓彤；责编：黄燕飞；素材

A 15-year-old boy with a genetic mutation suffered from osteosarcoma and took a three-year leave of absence to fight cancer. His mother claimed that the child had recently passed away and "his mother's world was completely shattered." Doctors had suggested amputation, but after barely saving the limb, he relapsed. He had already received the admission notice and was preparing to start a new life. (Editor: Li Xiaotong; Editor: Huang Yanfei; Material)