Prognostic Value of FDG Uptake of Portal Vein Tumor Thrombosis in Patients With Locally Advanced Hepatocellular Carcinoma.

Abstract:

PURPOSE:This study aimed to evaluate the prognostic value of F-FDG uptake of portal vein tumor thrombosis (PVTT) for predicting progression-free survival (PFS) and overall survival (OS) in patients with locally advanced hepatocellular carcinoma (HCC). METHODS:The study retrospectively included 166 HCC patients with PVTT and no extrahepatic metastases who underwent staging FDG PET/CT. Tumor-to-liver uptake ratio (TLR) and PVTT-to-liver uptake ratio (PLR) were measured for each patient, and the prognostic values of clinical factors, TLR, and PLR were assessed. Furthermore, patients were classified into 2 subgroups according to TLR, and the prognostic value of PLR was evaluated in each subgroup. RESULTS:Median PFS and OS were 6.2 and 10.1 months, respectively. On multivariate analysis, tumor size (P = 0.006) and PLR (P = 0.03) were independent prognostic factors for PFS, whereas Child-Pugh class (P = 0.02) and PLR (P = 0.02) were independent prognostic factors for OS. Tumor-to-liver uptake ratio was a significant prognostic factor for PFS and OS on univariate analysis but failed to show significance on multivariate analysis. In both patient subgroups with low and high TLR, PLR remained a significant prognostic factor for predicting OS (P = 0.04 for all). CONCLUSIONS:FDG uptake of PVTT, but not FDG uptake of HCC, is an independent prognostic factor for PFS and OS in HCC patients with PVTT and no extrahepatic metastasis. Given the prognostic significance, it is strongly encouraged to use FDG uptake of PVTT in further risk stratification for HCC patients with PVTT.

journal_name

Clin Nucl Med

authors

Lee JW,Hwang SH,Kim DY,Han KH,Yun M

doi

10.1097/RLU.0000000000001422

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

e35-e40

issue

1

eissn

0363-9762

issn

1536-0229

journal_volume

42

pub_type

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