Small Arterioportal Shunt: A Pseudolesion Mimicking Hepatocellular Carcinoma in Angiography
Journal of the Korean Radiological Society
;
: 911-917, 1996.
Article
in Korean
| WPRIM
| ID: wpr-57271
ABSTRACT
PURPOSE:
To document the findings of a small arterioportal(AP) shunt on hepatic angiography through the various diagnostic modalities, and to determine whether this shunt is related to hepatocelluar carcinoma. MATERIALS ANDMETHODS:
During the hepatic angiography in 223 patients, a small AP shunt and subsequent focalparenchymal staining more than 1cm in diameter were found in 28 patients. We compared this angiographic abnormality using MR imaging(n=10), CTAP(n=12), iodized-oil CT(n=23), intraoperative ultrasonography(n=5) and follow-up hepatic angiography(n=11), as well as with conventional ultrasonography and CT scan.RESULTS:
Arterioportal shunts noted on angiographic study matched with perfusion defects noted in CTAP(10/12) and also with the area of arterial enhancement seen on dynamic CT scan(3/4). In no case was a lesion found on MR and no Lipiodol uptake was seen on CT. There was no evidence of tumor growth around the AP shunts on follow-up angiographies, andno tumor was found during surgery.CONCLUSION:
A small AP shunt was not related to the presence of a tumor. Ifthe hemodynamic changes resulfing from a small AP shunt are understood, confusion can be avoided in the interpretation of vascular imaging including CTAP and dynamic CT.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Perfusion
/
Angiography
/
Tomography, X-Ray Computed
/
Follow-Up Studies
/
Carcinoma, Hepatocellular
/
Hemodynamics
Type of study:
Observational study
/
Prognostic study
Limits:
Humans
Language:
Korean
Journal:
Journal of the Korean Radiological Society
Year:
1996
Type:
Article
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