Annals of Coloproctology

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Venous thromboembolism among Asian populations with localized colorectal cancer undergoing curative resection: is pharmacological thromboprophylaxis required? A systematic review and meta-analysis: Shih Jia Janice Tan, Emile Kwong-Wei Tan, Yvonne Ying Ru Ng, Rehena Sultana, John Carson Allen, Isaac Seow-En, Ronnie Mathew, Aik Yong Chok; Ann Coloproctol. 2024;40(3):200-209. Published online May 16, 2024; DOI: https://doi.org/10.3393/ac.2022.01046.0149

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Purpose
We compared the incidence of venous thromboembolism (VTE) among Asian populations with localized colorectal cancer undergoing curative resection with and without the use of pharmacological thromboprophylaxis (PTP).
Methods
A comprehensive literature search was undertaken to identify relevant studies published from January 1, 1980 to February 28, 2022. The inclusion criteria were patients who underwent primary tumor resection for localized nonmetastatic colorectal cancer; an Asian population or studies conducted in an Asian country; randomized controlled trials, case-control studies, or cohort studies; and the incidence of symptomatic VTE, deep vein thrombosis, and/or pulmonary embolism as the primary study outcomes. Data were pooled using a random-effects model. This study was registered in PROSPERO on October 11, 2020 (No. CRD42020206793).
Results
Seven studies (2 randomized controlled trials and 5 observational cohort studies) were included, encompassing 5,302 patients. The overall incidence of VTE was 1.4%. The use of PTP did not significantly reduce overall VTE incidence: 1.1% (95% confidence interval [CI], 0%–3.1%) versus 1.9% (95% CI, 0.3%–4.4%; P = 0.55). Similarly, PTP was not associated with significantly lower rates of symptomatic VTE, proximal deep vein thrombosis, or pulmonary embolism.
Conclusion
The benefit of PTP in reducing VTE incidence among Asian patients undergoing curative resection for localized colorectal cancer has not been clearly established. The decision to administer PTP should be evaluated on a case-bycase basis and with consideration of associated bleeding risks.

Citations

Citations to this article as recorded by

Effectiveness and Safety of Long-Term Venous Thromboembolism Prophylaxis After Colorectal Cancer Surgery: A Retrospective Study
Ying Zhang, Xiaozhu Zhou, Yi Wu, Shicai Chen, Xiangli Cui, Ying Zhao
Drugs - Real World Outcomes.2025; 12(3): 479. CrossRef
Machine learning-based risk prediction of postoperative deep vein thrombosis in Chinese patients undergoing gastrointestinal surgery
Likui Huang, Lihua Gong, Jun Chen, Xiaojing Chen, Bicha Yao, Zhengrong Wang, Shuwei Weng
Frontiers in Cardiovascular Medicine.2025;[Epub] CrossRef

Original Article

Malignant disease, Rectal cancer,Colorectal cancer,Biomarker & risk factor

Prognostic Value of Neutrophil-to-Lymphocyte Ratio in Obstructing Colorectal Cancer Treated by Endoscopic Stenting as a Bridge to Surgery: Jiwei Guo, Aik Yong Chok, Hui Jun Lim, Wei Xuan Tay, Weng Kit Lye, Lasitha Bhagya Samarakoon, Emile John Tan, Ronnie Mathew; Ann Coloproctol. 2021;37(3):159-165. Published online May 28, 2021; DOI: https://doi.org/10.3393/ac.2020.05.25

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Abstract PDF Supplementary Material

Purpose
Neutrophil-to-lymphocyte ratio (NLR) has been reported to predict adverse survival outcomes among patients with colorectal cancer (CRC). This study evaluates the prognostic value of NLR among patients with obstructing CRC who successfully underwent stenting before curative surgery.
Methods
We retrospectively reviewed patients who underwent stenting before surgery. Patient demographics, tumor characteristics, perioperative outcomes, recurrence-free survival (RFS), and overall survival (OS) were analyzed. NLR was calculated from the differential white blood cell counts at least 4 days after successful stenting, before elective surgery. Optimal cutoff to dichotomize NLR was obtained by maximizing log-rank test statistic with recursive partitioning of KaplanMeier RFS and OS curves. The optimal cutoff for high NLR was ≥ 5 at presentation before stenting, and ≥ 4 after stenting.
Results
Fifty-seven patients with localized obstructing CRC underwent successful endoscopic stenting before curative surgery. High NLR was associated with lymphovascular invasion (P = 0.006) and apical lymph node involvement (P = 0.034). Major perioperative complication(s) (hazard ratio [HR], 11.34; 95% confidence interval [CI], 2.49 to 51.56; P < 0.01) and high NLR (HR, 3.69; 95% CI, 1.46 to 9.35; P < 0.01) negatively impacted OS on univariate and multivariate analyses. High NLR negatively impacted RFS on univariate analysis (HR, 2.91; 95% CI, 1.29 to 6.60; P = 0.01).
Conclusion
NLR of ≥ 4 after stenting is an independent prognostic factor among patients with obstructing localized CRC who are successfully decompressed by endoscopic stenting before curative surgery.

Citations

Citations to this article as recorded by

Impact of Postoperative Naples Prognostic Score to Predict Survival in Patients with Stage II–III Colorectal Cancer
Su Hyeong Park, Hye Seung Woo, In Kyung Hong, Eun Jung Park
Cancers.2023; 15(20): 5098. CrossRef
Inflammatory Response Markers as Predictors of Colorectal Cancer Prognosis
Minsung Kim, Il Tae Son, Bo Young Oh
The Ewha Medical Journal.2023;[Epub] CrossRef
Pretreatment inflammatory markers predicting treatment outcomes in colorectal cancer
Sanghyun An, Hongjin Shim, Kwangmin Kim, Bora Kim, Hui-Jae Bang, Hyejin Do, Hyang-Rae Lee, Youngwan Kim
Annals of Coloproctology.2022; 38(2): 97. CrossRef

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