概述
Osteosarcoma is the most common primary bone cancer, usually originating in the long bones (e.g., femur, tibia, humerus). It most commonly affects children, adolescents, and young adults, particularly during growth spurts.
症状
- Persistent bone pain, especially at night or during activity
- Swelling or tenderness near a joint
- Limping or restricted joint movement
- Bone fracture without significant trauma
病因与风险因素
- Rapid bone growth during puberty
- Previous radiation therapy
- Genetic conditions (e.g., Li-Fraumeni syndrome, hereditary retinoblastoma)
- Paget’s disease of bone (in older adults)
诊断方法
- X-ray and MRI of the affected area
- Bone biopsy (open or needle)
- CT scan of chest (to check for lung metastasis)
- Bone scan or PET-CT (to assess spread)
治疗方案
- Neoadjuvant chemotherapy (before surgery)
- Surgical resection (limb-sparing surgery or amputation)
- Adjuvant chemotherapy (after surgery)
- Targeted therapy or immunotherapy (clinical trials)
预后情况
- 5-year survival for localized disease: ~60–80%
- Prognosis poorer if metastatic at diagnosis, especially to lungs
- Response to chemotherapy is a key prognostic factor
与此类癌症共处
- Physical rehabilitation and prosthetic support (if limb removed)
- Psychosocial support for youth and families
- Academic and peer reintegration planning
- Long-term surveillance for recurrence and late effects of chemo
预防与筛查
- No known prevention
- Genetic counseling for high-risk families
- Monitor for secondary cancers in survivors
FAQs
Q: Does osteosarcoma only affect young people?
A: Mostly, but it can also occur in older adults with bone diseases like Paget’s.
Q: Will I lose my limb?
A: Not always. Limb-sparing surgery is successful in many cases.
Q: Can it spread?
A: Yes, primarily to the lungs and other bones.
相关资源
- Sarcoma Alliance
- Children’s Oncology Group (COG)
- ClinicalTrials.gov
