Volume 41, Issue 8 1 pp. 2087-2094
Original Scientific Report

Clinicopathological Characteristics of Hepatocellular Carcinoma with Microscopic Portal Venous Invasion and the Role of Anatomical Liver Resection in These Cases

Shingo Shimada

Corresponding Author

Shingo Shimada

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Tel.: +81-11-7065927, [email protected]Search for more papers by this author
Toshiya Kamiyama

Toshiya Kamiyama

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Search for more papers by this author
Hideki Yokoo

Hideki Yokoo

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Search for more papers by this author
Tatsuya Orimo

Tatsuya Orimo

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Search for more papers by this author
Kenji Wakayama

Kenji Wakayama

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Search for more papers by this author
Takahiro Einama

Takahiro Einama

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Search for more papers by this author
Tatsuhiko Kakisaka

Tatsuhiko Kakisaka

Department of Surgery, Sapporo Kousei Hospital, Sapporo, Japan

Search for more papers by this author
Hirofumi Kamachi

Hirofumi Kamachi

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Search for more papers by this author
Akinobu Taketomi

Akinobu Taketomi

Department of Gastroenterological Surgery I, Hokkaido University Graduate School of Medicine, North15-West7, Kita-Ku, 060-8638 Sapporo, Hokkaido, Japan

Search for more papers by this author
First published: 07 March 2017
Citations: 22

Abstract

Background

The aims of this study were to investigate predictive factors for microscopic portal venous invasion (mPVI) in hepatocellular carcinoma (HCC) and whether anatomical liver resection (ALR) was useful in such cases.

Methods

We analyzed 852 patients with HCC without macroscopic portal venous invasion who were treated at our hospital between January 1990 and May 2014. These patients were stratified into a microscopic portal venous invasion group (mPVI group; n = 153) and non-microscopic portal venous invasion group (NmPVI group; n = 699).

Results

PIVKA-II ≥100 mAU/ml, a tumor size ≥5 cm, a confluent lesion, and poor differentiation were found to be independent risk factors for mPVI. Among the mPVI group who had single HCC under 5 cm, serum albumin level <4.0 g/dl, PIVKA-II ≥100 mAU/ml, a positive surgical margin, and non-ALR (NALR) were independent unfavorable prognostic factors for overall survival (OS). PIVKA-II ≥100 mAU/ml, a positive surgical margin and NALR were independent unfavorable prognostic factors for relapse-free survival (RFS). ALR was significantly favorable factor for both OS and RFS of the mPVI group who had single HCC under 5 cm.

Conclusions

Even if no portal venous invasion is detectable in HCC patients preoperatively, a PIVKA-II ≥100 mAU/ml, tumor size ≥5 cm, and a confluent lesion indicate a high risk of mPVI. ALR should be considered for the patients with these characteristics because it is a favorable prognostic factor in these cases with mPVI.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.