Peripheral cholangiocarcinoma of the liver: two-phase spiral CT findings.

Abstract:

PURPOSE:To determine characteristic features of peripheral cholangiocarcinoma on two-phase spiral computed tomographic (CT) scans. MATERIALS AND METHODS:Thirty-four patients with peripheral cholangiocarcinoma underwent two-phase spiral CT. Hepatic arterial phase and portal venous phase images were obtained 30 and 65 seconds, respectively, after the start of contrast material infusion. RESULTS:Thin, mild, incomplete rimlike contrast enhancement at the tumor periphery was seen on CT scans from both phases in 23 patients. Thick, continuous rimlike contrast enhancement and marked homogeneous contrast enhancement were present on scans in four patients and one patient, respectively. No definite contrast enhancement pattern was seen on scans in six patients. Other findings included increased lobar or segmental hepatic attenuation in adjacent normal liver during the arterial phase (n = 10), markedly low attenuation with amorphous areas of slightly high attenuation in the tumor during both phases (n = 33), internal septumlike linear structures (n = 8), narrowing or obstruction of the portal vein as it traversed the tumor (n = 16), and a patent hepatic vein (n = 4). CONCLUSION:Thin, mild, incomplete rimlike contrast enhancement at the tumor periphery and markedly low intratumoral attenuation with amorphous areas of slightly high attenuation during both scanning phases are typical findings of peripheral cholangiocarcinoma.

journal_name

Radiology

journal_title

Radiology

authors

Kim TK,Choi BI,Han JK,Jang HJ,Cho SG,Han MC

doi

10.1148/radiology.204.2.9240550

subject

Has Abstract

pub_date

1997-08-01 00:00:00

pages

539-43

issue

2

eissn

0033-8419

issn

1527-1315

journal_volume

204

pub_type

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