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Background: Neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR) and lymphocyte-to-monocyte ratio (LMR) have been identified as potential prognostic factors for overall survival (OS) in primary colorectal cancer, and there is a growing interest in their use in colorectal liver metastases (CLMs). However, optimal cut-off values for these ratios have not been defined by making comparison between series difficult. This study aimed to confirm the prognostic value of inflammatory scores in patients undergoing resection for CLM., Methods: We retrospectively analysed data from 376 consecutive patients who underwent liver surgery for CLM between June 2010 and August 2015. We assessed the reproducibility of previously published ratios and determined new cut-off values using the Cut-off Finder web-based tool. Relations between cut-off values and OS were analysed with Kaplan-Meier log-rank survival analysis and multivariate Cox models., Results: Three hundred and forty-three patients had full preoperative blood tests for calculation of NLR, PLR and LMR. The number of cut-off values which showed a significant discrimination for OS was 49/249 (19.7%) for NLR, 28/316 (8.9%) for PLR and 22/214 (10.3%) for LMR, all with a scattered nonlinear distribution., Conclusions: This study showed that inflammatory scores expressed as ratios do not seem to be consistently reliable prognostic markers in patients with resectable CLM.

Background: Scoring systems were developed to stratify patients with colorectal liver metastases considered for liver resection into different risk groups. Such scores have never been evaluated in recurrent liver metastases. The aim of this study was to evaluate whether these scores are applicable to patients with recurrent colorectal liver metastases and treated with curative intent., Methods: We retrospectively analyzed data from 375 consecutive patients who underwent liver surgery for colorectal liver metastases between June 2010 and August 2015. Seventy-three patients developed liver-limited recurrence treated with curative intent. The predictive value of 6 scores (Fong, Sofocleous, Nagashima, Nordlinger, Konopke, and the Basingstoke index) was assessed in this set of patients., Results: Median follow-up was 36.2 months. Overall survival and progression-free survival were 33.6 and 5.6 months, respectively. When scores were applied for OS, none showed a significant stratification between patients, although Nagashima's score showed a significant difference in overall survival between patients from the low-risk group and those from the intermediate- and high-risk groups (40.8 vs 30.5 months, P = 0.039). For PFS, only Fong's score showed a statistically significant stratification (6.6 vs 4.7 months, P = 0.027)., Conclusion: Scoring systems are of limited-value in stratifying patients operated on for recurrent colorectal liver metastases., (© 2017 Wiley Periodicals, Inc.)

Background: The prognosis of patients undergoing liver resection for colorectal liver metastases (CLM) seems to be altered when the primary tumour is right-sided. However, data are lacking and conflicting. We aimed to evaluate the influence of the primary tumour location on oncologic outcomes following such surgery., Methods: We retrospectively analysed prospectively collected data from 376 consecutive patients who underwent liver surgery for CLM between June 2010 and August 2015. We compared the outcomes of patients with right colon tumours and those with left colorectal tumours. The splenic flexure was used as the cut-off point to determine the anatomic primary site., Results: Among the 364 patients eligible, 74 (20.3%) had a right-sided primary tumour. These patients were older, had a poorer American Society of Anaesthesiologists status and had fewer node-positive primary tumours. The CLM characteristics were similar between both groups. Median PFS was not significantly different between the two groups at 9.9 months, as well as the pattern of recurrence. Median OS was shorter for patients with right-sided primary tumour (34.6 versus 45.3 months, p = 0.035). Similar results were observed when patients with rectal tumour were excluded from analysis (34.6 vs. 47.5 months, p = 0.007). Primary tumour site was an independent prognosis factor in multivariate analysis., Conclusion: Right-sided location of the primary tumour is associated with worse OS after surgery for CLM, but seems to have no influence on PFS, and on the pattern of recurrence., (Copyright © 2017 Elsevier Ltd, BASO ~ The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.)

Background: Liver-limited recurrence after resection of colorectal liver metastases is a frequent occurrence, and can in some cases be treated with curative intent. Although surgical re-resection remains standard of care, there is growing interest in the role of ablation in this setting. The aim of this study was to compare the outcomes after curative-intent ablation and resection in patients with recurrent colorectal liver metastases., Methods: We retrospectively analysed data from 366 consecutive patients who underwent liver resection for colorectal liver metastases between June 2010 and August 2015. Sixty-four developed liver-limited recurrence which was treated with curative intent, thirty-three (51.6%) by ablation and 31 (48.4%) by repeat resection., Results: Patient groups were well matched, with surgically resected patients showing higher pre-operative carcinoembryonic antigen levels and larger metastases. There were fewer post-operative complications and shorter length of stay in the ablation group (p < 0.02). After a median follow-up of 36.2 months, median overall survival was the same for both the resected and ablated groups at 33.3 months. Median progression-free survival was longer for patients treated with surgery (10.2 months) compared to ablation (4.3 months) (p = 0.002)., Conclusions: Ablation or resection for liver-limited recurrence after surgery for colorectal liver metastases is associated with improved overall survival compared with systemic chemotherapy alone, and should always be considered for patients with resectable liver recurrence. Although ablation seemed to be associated with a shorter progression-free survival, post-procedure morbidity was significantly lower. The choice between ablation and resection should therefore be made on a personalised basis., (Copyright © 2017 Elsevier Ltd, BASO ~ The Association for Cancer Surgery, and the European Society of Surgical Oncology. All rights reserved.)

Opinion Statement: The role of physical interventions (surgical resection and surgical/radiological ablation) for liver metastases of colorectal cancer has changed dramatically over the last 10-15 years. Whereas in the 1990s, when only those patients with up to three unilobar metastases were considered for any form of such intervention, our present approach to these physical interventions is determined by how much viable disease-free liver can be preserved (most authorities accepting 25-30% disease-free future remnant liver volume) and the possibility of further such interventions if the disease recurs in the liver. There is increasing evidence that for smaller tumours (<3 cm diameter), ablation therapy may be therapeutically the equivalent of surgical resection and possibly safer in high-risk patients with multiple comorbidities. Therefore, we now consider the use of such ablation therapies (with or without surgical resection) to be clinically effective when treating patients with multiple bilobar metastases that have shown good radiologic response to prior systemic therapy.