osteoblastic osteosarcoma

例句：

1. 1.The patient's bone scan revealed an osteosarcoma in the left femur.
   患者的骨扫描显示左股骨有成骨肉瘤。
2. 2. This rare cancer is characterized by its aggressive growth and high recurrence rate.
   这种罕见的癌症以其侵袭性生长和高复发率而著称。
3. 3.Treatment options for osteosarcoma include surgery, radiation therapy, and chemotherapy.
   治疗成骨肉瘤的方法包括手术、放疗和化疗。