Eight years ago, Li Nana, aged 65,438+02, had his right leg amputated because of osteosarcoma. In August last year, she was found that osteosarcoma had metastasized to both lungs, belonging to the advanced stage of malignant tumor. Li Nana, known as the most beautiful girl, a friend of hers said that Li Nana was treated in the First Affiliated Hospital of Xi Jiaotong University, Xijing Hospital and Tang Dou Hospital, and finally died after being transferred to Gaoling County Hospital.

Osteosarcoma is a primary malignant tumor, and the patients are mostly teenagers and children. Its characteristic is that tumor cells directly form bone-like tissue, which is highly malignant and life-threatening. The study of osteosarcoma shows that the specific cause of osteosarcoma has not yet been determined.