Treatment of Bone Metastases in Lung Cancer: The Actual Role of Zoledronic Acid
Approximately 30-40% of NSCLC patients develop bone metastases. Bone metastases are associated with a significant increase in skeletal-related events (SREs), including severe bone pain, hypercalcemia, pathological fractures, spinal cord compression. These SREs result in impaired mobility, reduced quality of life, and frequently require therapeutic intervention (radiation therapy, surgery and systemic treatments). The normal balance of formation of new bone by osteoblasts and the resorption of old bone by osteoclasts becomes imbalanced and/or uncoupled, leading to the development of lesions that are osteolytic, osteoblastic, or a combination of both. The current National Comprehensive Cancer Network (NCCN) Clinical Practice Giudelines in Oncology recommend palliative external-beam radiotherapy for the treatment of bone metastases in patients with NSCLC and healthcare professionals treating such patients are urged to consider bisphosphonate therapy. Zoledronic acid is the first and only bisphosphonate that has proven efficacy for the treatment of bone metastases from a broad range of solid tumor types, including lung cancer.
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