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Article History

Received: 12 August 2020

Accepted: 6 October 2020

First Online: 19 November 2020

Compliance with ethical standards

:

: The scientific guarantor of this publication is Seong Hyun Kim (kshyun@skku.edu).

: The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.

: Two authors (Seon Woo Kim and Hye Seung Kim) have significant statistical expertise.

: Written informed consent was waived by the Institutional Review Board.

: Institutional Review Board approval was obtained (IRB 2020-04-018).

: Parts of the study samples were included in the prior report from our institution (Min et al <i>Radiology</i> 2019;290(3):691–699, Lee et al <i>Radiology</i> 2016 Oct;281(1):119–28, and Lim et al <i>Eur J Nucl Med Mol Imaging</i> 2019;46(8):1705-1712). Among the 63 patients with non-HCC (42 intrahepatic cholangiocarcinomas [ICC] and 21 combined hepatocellular-cholangiocarcinomas [cHCC-CC]), imaging findings of 23 (54.8%) ICCs and 12 (57.1%) combined cHCC-CCs have been previously reported. Previous studies focused on the imaging–pathology correlation and prognosis of ICCs using MRI (Min et al and Lee et al) or prognosis of cHCC-CCs using FDG PET-CT (Lim et al). Our current study evaluated the postoperative prognostic role of LI-RADS and PET-CT for ICCs and cHCC-CCs.

: • retrospective• diagnostic or prognostic study• performed at one institution