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Impact of primary tumour location on colorectal liver metastases: A systematic review 被引量:4

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摘要 BACKGROUND Colorectal cancer(CRC)is the third most common cause of cancer-related death worldwide.Despite significant advances in screening,surgical management and adjuvant therapies,average 5-year survival seldom exceeds 60%in most developed nations.Metastatic disease represents the primary cause of mortality in patients with CRC,and the liver is the most common location for distant tumour spread.Up to 25%of patients are found to have synchronous liver metastases at the time of diagnosis and a further 30%-40%will develop metachronous disease in the course of follow-up.It has been suggested that primary tumour location[right side versus left side,primary tumour location(PTL)]can influence oncological outcomes in this patient group and that this should be considered in prognostic models and therapeutic decision-making algorithms.This suggestion is not universally accepted and there have been conflicting reports in the literature to date.AIM To provide a comprehensive summary of the available evidence regarding the impact of PTL on oncological outcomes in patients with colorectal cancer liver metastases(CRCLM).METHODS MEDLINE,EMBASE and COCHRANE were searched for relevant publications using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses methodology.Data on oncological outcomes was then extracted from full text articles that met the predefined inclusion criteria.RESULTS A total of 41 studies were identified that met predefined inclusion criteria for this review.In 21 out of 38 studies that provided data on overall survival,a statistically significant improvement in overall survival was reported in patients with left sided primary tumours.These studies included a total of 13897 patients compared with 4306 patients in the studies that did not show a significant difference.Eight studies noted a similar trend towards improved disease-free or progression-free survival.Several authors observed distinct patterns of relapse after treatment of hepatic metastases according to PTL;for example hepatic re
出处 《World Journal of Clinical Oncology》 CAS 2020年第5期294-307,共14页 世界临床肿瘤学杂志(英文版)
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