| Summary: | Aim: The impact of occult vertebral fracture (OVF) on oncological outcomes after surgery has not been investigated, although its significance in orthopedics has been much debated recently. We evaluated the prognostic significance of OVF on the long-term outcomes of patients with colorectal liver metastases (CRLM) after hepatectomy. Methods: We included 140 patients with CRLM who underwent hepatectomy. OVF was identified using quantitative measurement and preoperative sagittal computed tomography image reconstruction from the 11th thoracic vertebra to the 5th lumber vertebra. Results: OVF was identified in 48 (34%) of the patients. In multivariate analysis, lymph node metastases (<i>p</i> < 0.01), multiple tumors (<i>p</i> = 0.02), extrahepatic lesions (<i>p</i> < 0.01), OVF (<i>p</i> < 0.01), intraoperative bleeding (<i>p</i> = 0.04), and curability 1 or 2 (<i>p</i> < 0.01) were independent and significant predictors of disease-free survival and extrahepatic lesions (<i>p</i> < 0.01), osteosarcopenia (<i>p</i> = 0.02), and OVF (<i>p</i> < 0.01) were independent and significant predictors of overall survival. A higher age, adjuvant chemotherapy for a primary lesion before metachronous liver metastases, osteopenia, and hypoalbuminemia were independent risk factors for OVF. Conclusions: The evaluation of preoperative OVF is a useful prognostic factor for risk stratification and clinical decision-making for patients with CRLM.
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