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Background: Low skeletal muscle mass is associated with increased postoperative morbidity and worse survival following resection for perihilar cholangiocarcinoma (PHC). We investigated the predictive value of skeletal muscle mass and density for overall survival (OS) of all patients with suspected PHC, regardless of treatment., Methods: Baseline characteristics and parameters regarding disease and treatment were collected from all patients with PHC from 2002 to 2014. Skeletal muscle mass and density were measured at the level of the third lumbar vertebra on CT. The association between skeletal muscle mass and density with OS was investigated using the Kaplan-Meier method and Cox survival., Results: Median OS in 233 included patients did not differ between those with and without low skeletal muscle mass (p = 0.203), whereas a significantly different median OS (months) was observed between patients with low (HR 7.0, 95% CI 4.7-9.3) and high (HR 12.1, 95% CI 8.1-16.1) skeletal muscle density (p = 0.004). Low skeletal muscle density was independently associated with decreased OS (HR 1.78, 95% CI 1.03-3.07, p = 0.040) within the first 6 months but not after 6 months (HR 0.68, 95% CI 0.44-1.07, p = 0.093), after adjusting for age, tumour size and suspected peritoneal or other distant metastases on imaging., Conclusion: A time-dependent effect of skeletal muscle density on OS was found in patients with PHC, regardless of subsequent treatment. Low skeletal muscle density may identify patients at risk for early death., (© 2018 The Author(s) Published by S. Karger AG, Basel.)

Low skeletal muscle mass (sarcopenia) is associated with increased morbidity and mortality in liver transplant candidates. We investigated the association between sarcopenia and hospital costs in patients listed for liver transplantation. Consecutive patients with cirrhosis listed for liver transplantation between 2007 and 2014 in a Eurotransplant centre were identified. The skeletal muscle index (SMI, cm 2 /m 2 ) was measured on CT performed within 90 days from waiting list placement. The lowest sex-spe cific quartile represented patients with sarcopenia. In total, 224 patients were included. Median time on the waiting list was 170 (IQR 47-306) days, and median MELD score was 16 (IQR 11-20). The median total hospital costs in patients with sarcopenia were €11 294 (IQR 3570-46 469) compared with €6878 (IQR 1305-20 683) in patients without sarcopenia (P = 0.008). In multivariable regression analysis, an incremental increase in SMI was significantly associated with a decrease in total costs (€455 per incremental SMI, 95% CI 11-900, P = 0.045), independent of the total time on the waiting list. In conclusion, sarcopenia is independently associated with increased health-related costs for patients on the waiting list for liver transplantation. Optimizing skeletal muscle mass may therefore lead to a decrease in hospital expenditure, in addition to greater health benefit for the transplant candidate., (© 2017 Steunstichting ESOT.)

Background: A reduction in skeletal muscle mass (sarcopenia) independently predicts poor survival in patients with hepatocellular carcinoma (HCC) undergoing treatment with curative intent. Whether this is due to an increased risk of recurrence and disease specific death, or due to an increased risk of postoperative morbidity and mortality is currently unclear. In this study, we investigate the association between sarcopenia and death in a cohort of HCC patients undergoing treatment with curative intent., Methods: Patients undergoing surgical resection or radiofrequency ablation for lesions ≤ 3 cm between 2002 and 2013 were identified. Clinicopathological characteristics, CT-assessed sarcopenia and outcomes were analyzed., Results: Among 90 patients, 52 (57.8%) were found to be sarcopenic. Sarcopenic patients had a limited overall survival (median: 33 months vs. non-sarcopenic median: 105 months; P = 0.002), but not disease-free survival. Sarcopenia was an independent predictor for overall survival in multivariate Cox-regression analysis (HR 3.756; P = 0.001). Major complications (32.7% vs. 13.2%, P = 0.033) and treatment-related mortality (17.3% vs. 2.6%, P = 0.029) were more frequent in sarcopenic patients., Conclusion: Sarcopenia impairs survival in patients with potentially curable hepatocellular carcinoma, mainly due to an increase in treatment-related mortality., (© 2015 Wiley Periodicals, Inc.)

Summary Background & aims Low skeletal muscle mass and density have recently been discovered as prognostic and predictive parameters to guide interventions in various populations, including cancer patients. The gold standard for body composition analysis in cancer patients is computed tomography (CT). To date, the effect of contrast-enhancement on muscle composition measurements has not been established. The aim of this study was to determine the effect of contrast-enhancement on skeletal muscle mass and density measurements on four-phase CT studies. Design In this observational study, two observers measured cross-sectional skeletal muscle area corrected for patients' height (skeletal muscle index [SMI]) and density (SMD) at the level of the third lumbar vertebra on 50 randomly selected CT examinations with unenhanced, arterial, and portal-venous phases. The levels of agreement between enhancement phases for SMI and SMD were calculated using intra-class correlation coefficients (ICCs). Results Mean SMI was 42.5 (±9.9) cm2/m2 on the unenhanced phase, compared with 42.8 (±9.9) and 43.6 (±9.9) cm2/m2 for the arterial and portal-venous phase, respectively (both p < 0.01). Mean SMD was lower for the unenhanced phase (30.9 ± 8.0 Hounsfield units [HU]) compared with the arterial (38.0 ± 9.9 HU) and portal-venous (38.7 ± 9.2 HU) phase (both p < 0.001). No significant difference was found between SMD in the portal-venous and arterial phase (p = 0.161). The ICCs were excellent (≥0.992) for all SMIs and for SMD between the contrast-enhanced phases (0.949). The ICCs for the unenhanced phase compared with the arterial (0.676) and portal-venous (0.665) phase were considered fair to good. Conclusions Statistically significant differences in SMI were observed between different enhancement phases. However, further work is needed to assess the clinical relevance of these small differences. Contrast-enhancement strongly influenced SMD values. Studies using this measure should therefore use the portal-venous phase of contrast-enhanced CT examinations. [ABSTRACT FROM AUTHOR]