| Intrahepatic arterioportal shunt: helical CT findings. | |
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MedLine Citation:
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PMID: 10415249 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to characterize the appearance of intrahepatic arterioportal shunts (APS) on two-phase helical CT, with emphasis on the importance of the hepatic arterial-dominant phase (HAP) to demonstrate perfusion disorders. We review eight cases of APS diagnosed by helical CT in our institution from January 1996 to March 1997 and describe the CT findings that established diagnosis. Five of them were confirmed by angiography. In seven (87. 5 %) cases of APS we found early enhancement of the peripheral portal branches during the HAP of helical CT, whereas the superior mesenteric and splenic veins remained unenhanced. In five (62.5 %) cases of APS, transient, peripheral, triangular parenchymal enhancement was depicted during the HAP of helical CT; in four of these cases there was associated early enhancement of the portal branches. Helical CT can show perfusion alterations that might remain undiagnosed with conventional CT. An understanding of the hemodynamic changes that occur in APS can help in the interpretation of focal transient hepatic parenchymal enhancement and to differentiate APS from hypervascular tumors. We believe that the helical CT findings described herein are characteristic enough to suggest the diagnosis of APS. |
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Authors:
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S Quiroga; M C Sebastià; M Moreiras; E Pallisa; J M Rius; A Alvarez-Castells |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: European radiology Volume: 9 ISSN: 0938-7994 ISO Abbreviation: Eur Radiol Publication Date: 1999 |
Date Detail:
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Created Date: 1999-09-08 Completed Date: 1999-09-08 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 9114774 Medline TA: Eur Radiol Country: GERMANY |
Other Details:
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Languages: eng Pagination: 1126-30 Citation Subset: IM |
Affiliation:
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Servei de Radiodiagnòstic, I. D. I. Hospital General i Universitari Vall d'Hebron, E-08035 Barcelona, Spain. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Arteriovenous Fistula
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etiology,
radiography* Contrast Media Hepatic Artery / radiography* Humans Image Processing, Computer-Assisted Portal Vein / radiography* Retrospective Studies Tomography, X-Ray Computed / methods* |
| Chemical | |
Reg. No./Substance:
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0/Contrast Media |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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