Systematic review of XXXX in @entity1 operated on for @entity344 .

@entity1 @entity788 @entity96 @entity5 @entity344 @entity6288 @entity71265 @entity14
BACKGROUND: Preoperative risk assessment in @entity5 surgery is of importance to improve treatment and outcome. The aim of this study was to assess the impact of CT-assessed @entity6288 on short- and long-term outcomes in @entity1 undergoing surgical resection of @entity344 . METHODS: A systematic search of Embase, PubMed and Web of Science was performed to identify relevant studies published before 30 September 2014. PRISMA guidelines for systematic reviews were followed. Screening for inclusion, checking the validity of included studies and data extraction were carried out independently by two investigators. RESULTS: After screening 692 records, 13 observational studies with a total of 2884 @entity1 were included in the analysis. There was wide variation in the reported prevalence of @entity6288 (17  0-79 per cent). @entity6288 was independently associated with reduced overall survival in seven of ten studies, irrespective of @entity5 site. Hazard ratios (HRs) of up to 3  19 ( @entity96 ), 1  63 ( @entity788 ), 1  85 ( @entity14 ) and 2  69 (colorectal liver metastases, @entity71265 ) were reported. For @entity5 , the HR was 0  31 for increasing muscle mass. In @entity1 with @entity14 and @entity71265 , @entity6288 was independently associated with postoperative mortality ( @entity14 : odds ratio (OR) 43  3), complications ( @entity14 : OR 0  96 for increasing muscle mass; @entity71265 ) and severe complications ( @entity71265 ). CONCLUSION: @entity6288 identified before surgery by single-slice CT is associated with @entity344 , and increased postoperative morbidity in @entity1 with @entity14 with or without hepatic metastases.
