alexa Natural history of bone metastasis in colorectal cancer: final results of a large Italian bone metastases study.
Surgery

Surgery

Journal of Surgery

Author(s): Santini D, Tampellini M, Vincenzi B, Ibrahim T, Ortega C,

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Abstract BACKGROUND: Data are limited regarding bone metastases from colorectal cancer (CRC). The objective of this study was to survey the natural history of bone metastasis in CRC. PATIENTS AND METHODS: This retrospective, multicenter, observational study of 264 patients with CRC involving bone examined cancer treatments, bone metastases characteristics, skeletal-related event (SRE) type and frequency, zoledronic acid therapy, and disease outcomes. RESULTS: Most patients with bone metastases had pathologic T3/4 disease at CRC diagnosis. The spine was the most common site involved (65\%), followed by hip/pelvis (34\%), long bones (26\%), and other sites (17\%). Median time from CRC diagnosis to bone metastases was 11.00 months; median time to first SRE thereafter was 2.00 months. Radiation and pathologic fractures affected 45\% and 10\% of patients, respectively; 32\% of patients had no reported SREs. Patients survived for a median of 7.00 months after bone metastases diagnosis; SREs did not significantly affect survival. Subgroup analyses revealed that zoledronic acid significantly prolonged median time to first SRE (2.00 months versus 1.00 month, respectively, P=0.009) and produced a trend toward improved overall survival versus no zoledronic acid. CONCLUSION: This study illustrates the burden of bone metastases from CRC and supports the use of zoledronic acid in this setting. This article was published in Ann Oncol and referenced in Journal of Surgery

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