Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
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alsfakia@gmail.com

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Τετάρτη 4 Οκτωβρίου 2017

Meta-analysis of the clinicopathological characteristics and peri-operative outcomes of colorectal cancer in obese patients

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Publication date: December 2017
Source:Cancer Epidemiology, Volume 51
Author(s): Ailin C. Rogers, Guy S. Handelman, J. Gemma Solon, Deborah A. McNamara, Joseph Deasy, John P. Burke
BackgroundThe effect of obesity on the clinicopathological characteristics of colorectal cancer (CRC) has not been clearly characterized. This meta-analysis assesses the pathological and perioperative outcomes of obese patients undergoing surgical resection for CRC.MethodsMeta-analysis was performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Databases were searched for studies reporting outcomes for obese and non-obese patients undergoing primary CRC resection, based on body-mass index measurement. Results were reported as mean differences or pooled odds ratios (OR) with 95% confidence intervals (95% CI).ResultsA total of 2183 citations were reviewed; 29 studies comprising 56,293 patients were ultimately included in the analysis, with an obesity rate of 19.3%. Obese patients with colorectal cancer were more often female (OR 1.2, 95% CI 1.1–1.2, p<0.001) but there was no difference in the proportion of rectal cancers, T4 tumours, tumour differentiation or margin positivity. Obese patients were significantly more likely to have lymph node metastases (OR 1.2, 95% CI 1.1–1.2, p<0.001), have a lower nodal yield, were associated with a longer duration of surgery, more blood loss and conversions to open surgery (OR 2.6, 95% CI 1.6–4.0, p<0.001) but with no difference in length of stay or post-operative mortality.ConclusionThis meta-analysis demonstrates that obese patients undergoing resection for CRC are more likely to have node positive disease, longer surgery and higher failure rates of minimally invasive approaches. The challenges of colorectal cancer resection in obese patients are emphasized.



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