Privileged indication of anatomical resection for the hepatocellular carcinoma with microportal invasion?

We have read the article with special interest on the impact of anatomical resection (AR) for hepatocellular carcinoma with microportal invasion (vp1) reported by Hidaka et al., (electronically published in July 2018) (1). Even though the study is retrospective analysis, the key message in their article by propensity score matched analysis is that the AR did not influenced on the recurrence free survival and overall survival