Document Detail

Portal and hepatic vein thrombosis in liver abscess: CT findings.
MedLine Citation:
PMID:  17161932     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Our aim is to describe imaging findings of portal and hepatic vein thrombosis in pyogenic liver abscess on contrast-enhanced MDCT and to determine the incidence and evolving patterns on follow-up imaging. METHODS: Over a 5-year period, 67 patients with liver abscess underwent single-phase (n=30) or triphasic (n=37) contrast-enhanced CT. Images were reviewed for the presence of portal vein (PV) or hepatic vein (HV) thrombosis, regional parenchymal attenuation, and changes on follow-up CT. RESULTS: Venous thrombosis was seen in 28/67 patients (42%), involving PV in 16/67 (24%) and HV vein in 15/67 (22%); 3/67 (4%) had both PV and HV thrombosis. Thrombosis was seen as non-enhancing linear structures without expanding the lumen in all cases. Regional parenchymal attenuation during the portal-phase was hyperattenuating (10/16, 63%) or isoattenuating (6/16, 38%) in PV thrombosis, and mostly hypoattenuating (13/15, 87%) in HV thrombosis (P<.001). Of 27 patients with follow-up contrast-enhanced CT, venous thrombosis resolved in 10/27 (37%) within 6 months and persisted in 17/27 (63%) for 3-38 months, including 13 PV thrombosis and 4 HV thrombosis. Interval parenchymal atrophy was seen only in four all with persistent PV thrombosis. CONCLUSIONS: Both PV and HV thrombosis frequently occurs in liver abscess and is seen as non-enhancing linear structures without expanding the lumen on contrast-enhanced CT. Regional attenuation changes in hepatic vein thrombosis were often hypoattenuating whereas none with portal vein thrombosis showed hypoattenuation.
Mohammed Aejaz Syed; Tae Kyoung Kim; Hyun-Jung Jang
Publication Detail:
Type:  Journal Article     Date:  2006-12-11
Journal Detail:
Title:  European journal of radiology     Volume:  61     ISSN:  0720-048X     ISO Abbreviation:  Eur J Radiol     Publication Date:  2007 Mar 
Date Detail:
Created Date:  2007-02-23     Completed Date:  2007-04-17     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8106411     Medline TA:  Eur J Radiol     Country:  Ireland    
Other Details:
Languages:  eng     Pagination:  513-9     Citation Subset:  IM    
Department of Medical Imaging, University Health Networks and Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada.
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MeSH Terms
Aged, 80 and over
Budd-Chiari Syndrome / etiology,  radiography
Contrast Media
Liver Abscess / complications*,  radiography
Middle Aged
Portal Vein / radiography*
Retrospective Studies
Tomography, Spiral Computed*
Venous Thrombosis / etiology,  radiography*
Reg. No./Substance:
0/Contrast Media

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