The Imaging Findings of Small(< or =15mm) Portal Defects in the Liver on CT Arterial Portography: Evaluationwith CT Hepatic Arteriography and Lipiodol CT.
10.3348/jkrs.1999.40.5.921
- Author:
Ho Sung KIM
1
;
Hyun Ki YOON
;
Ki Young KO
;
Ho Young SONG
;
Mun Gyu LEE
;
Hyun Kwun HA
;
Gyu Bo SUNG
;
Yong Ho AUH
Author Information
1. Department of Diagnostic Radiology, Asan Medical Center, University of Ulsan, College of Medicine, Korea.
- Publication Type:Original Article
- Keywords:
Liver, CT;
Liver neoplasm, CT;
Computed tomography, helical technology
- MeSH:
Angiography*;
Ethiodized Oil*;
Follow-Up Studies;
Humans;
Liver*;
Portography*
- From:Journal of the Korean Radiological Society
1999;40(5):921-927
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To assess the malignant potential of small(< or =15mm) portal defects seen on CT arterial portography,the findings of CT hepatic arteriography and lipiodol CT CT were reviewed. MATERIALS AND METHODS: In 91 patientswho underwent both CTAP and CTHA, small portal defects were re-viewed for frequency, multiplicity and location. Weprospectively evauluated changes in the size and enhance-ment pattern of malignant lesions on follow up CTaccording to density on CTHA, location, lipiodol deposits on lipiodol CT, and multiplicity. RESULTS: Among the 91patients, 102 small defects were defected in 42 patients(46%). Small portal defects were benign, malignant, and ofundetermined malignant potential in 77%, 20% and 3% of cases, respectively. Small portal defects that werehyperattenuated on CTHA, and lipiodol deposits on lipiodol CT, were malignant in 42% and 70% of cases,respectively. Location and multiplicity did not show statistically significant variation between benign andmalignant defects. CONCLUSION: Small portal defects are common and there is a high probability that portaldefects smaller than 15mm are benign, even in patients with a known hepatic mass and defect that washyperattenuated on CTHA. If a small defect showed lipiodol deposit on lipiodol CT, malignancy must be suspected.
