Combined CT-guided radiofrequency ablation with systemic chemotherapy improves the survival for nasopharyngeal carcinoma with oligometastasis in liver: Propensity score matching analysis.

Oncotarget · 2017 · PMC5581018 · PMID 28881719

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marginally significantno p-value reported

However, in their study, the metastatic onset and cycles of chemotherapy received had not been included in an analysis, and a marginally significant difference in the distribution of the number of the liver metastatic lesion was observed between different treatment subgroups; all these factors might cause confounding effects.

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