Intraoperative laparoscopic ultrasound-guided resection and microwave ablation for colorectal liver metastases

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Aug 15, 2025 (publication date) through Aug 28, 2025

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World Journal of Gastrointestinal Oncology

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1948-5204

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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World J Gastrointest Oncol. Aug 15, 2025; 17(8): 107526
Published online Aug 15, 2025. doi: 10.4251/wjgo.v17.i8.107526

Table 6 Multivariate Cox regression analysis of prognostic factors

Factor	Coding	Hazard ratio	95%CI	P value
Intraoperative contrast-enhanced ultrasound with Sonazoid application	No = 0; yes = 1	2.134	1.162-3.929	0.017
Postoperative N stage	N0 = 0; N1 = 1; N2 = 2	1.459	0.995-2.169	0.176
Number of liver metastases	≤ 3 = 0; > 3 = 1	1.480	0.913-2.524	0.251
Differentiation of primary tumor	Low = 0; moderate/high = 1	0.521	0.312-0.914	0.017

Variables were coded as 0/1 for binary categories or ordinal scales (e.g., N stage).

Citation: Wu HR, Bu H, Liu YY, Zhou HP, Ye JS, Chen H. Intraoperative laparoscopic ultrasound-guided resection and microwave ablation for colorectal liver metastases. World J Gastrointest Oncol 2025; 17(8): 107526
URL: https://www.wjgnet.com/1948-5204/full/v17/i8/107526.htm
DOI: https://dx.doi.org/10.4251/wjgo.v17.i8.107526