Case Report
Copyright ©2007 Baishideng Publishing Group Co., Limited. All rights reserved.
World J Gastroenterol. Sep 7, 2007; 13(33): 4529-4532
Published online Sep 7, 2007. doi: 10.3748/wjg.v13.i33.4529
Positron emission tomography/computed tomography with 18F-fluorodeoxyglucose identifies tumor growth or thrombosis in the portal vein with hepatocellular carcinoma
Long Sun, Hua Wu, Wei-Ming Pan, Yong-Song Guan
Long Sun, Hua Wu, Wei-Ming Pan, Minnan PET Center, The First Hospital of Xiamen, Fujian Medical University, Xiamen 316003, Fujian Province, China
Yong-Song Guan, West China Hospital of Sichuan University; State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, Gaopeng Street, Keyuan Road 4, Chengdu 610041, Sichuan Province, China
Author contributions: All authors contributed equally to the work.
Correspondence to: Yong-Song Guan, West China Hospital of Sichuan University, Chengdu; State Key Laboratory of Biotherapy, West China Medical School, Sichuan University, Gaopeng Street, Keyuan Road 4, Chengdu 610041, Sichuan Province, China. yongsongguan@yahoo.com
Telephone: +86-28-85421008 Fax: +86-28-85538359
Received: April 18, 2007
Revised: May 5, 2007
Accepted: May 12, 2007
Published online: September 7, 2007
Abstract

Patients suffering from hepatocellular carcinoma (HCC) with tumor thrombus in the portal vein generally have a poor prognosis. Portal vein tumor thrombus must be distinguished from portal vein blood thrombus, and this identification plays a very important role in management of HCC. Conventional imaging modalities have limitations in discrimination of portal vein tumor thrombus. The application of positron emission tomography (PET) with 18F-fluorodeoxyglucose (18F-FDG) for discrimination between tumor extension and blood thrombus has been reported in few cases of HCC, while portal tumor thrombosis and portal vein clot identified by 18F-FDG PET/CT in HCC patients has not been reported so far. We present two HCC cases, one with portal vein tumor thrombus and one thrombosis who were identified with 18F-FDG PET/CT. This report illustrates the complimentary value of combining the morphological and functional imaging in achieving a correct diagnosis in such clinical situations.

Keywords: 18F-fluorodeoxyglucose; Positron emission tomography; Computed tomography; Portal vein tumor thrombus; Portal vein thrombosis