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Abstract

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Purpose : To evaluate the prevalence of capsular retraction in malignant hepatic tumors
and the factors involved.
Materials and Methods : Between January 1994 and December 1996, we retrospectively
reviewed the CT scans of 152 patirnts with pathologically-proven, peripherally-located,
malignant hepatic tumors. We evaluated size, portal and hepatic venous obstruction, bile
duct dilatation, and liver atrophy in 18 cases involving capsular retraction.
Results : The overall prevalence of capsular retraction among malignant hepatic tumors
was 18/152(13%): the prevalence was 9/129(7%) in hepatocellular carcinoma, 6/14(43%)
in cholangiocarcinoma and 3/9(33%) in metastatic cnacer : among cases of
cholangiocarcinoma and metastatic cancer, the prevalence was igh(p<0.05). Portal venous
obstruction was seen in six patients with hepatocellular carcinoma (a high incidence
:p=0.041) and one with cholangiocarcinoma. Hepatic venous obstrection was dumonstrated
in one patient with hepatocellular carcinoma and one with cholangiocarcinoma. Among
cholangiocarcinoma patients, bile duct obstruction was seen in four and liver atrophy in
three, but among metastatic cancer cases there were no similar findings.
Conclusion : The main factors causing capsular retraction were portal venous
obstruction in hepatocellular carcinoma and bile duct obstruction and liver atrophy in
cholangiocarcinoma.(J Korean Radiol Soc 1998:38: 267-271)

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Liver neoplasms; CT; Liver neoplasms; diagnosis;

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