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Intrahepatic peripheral cholangiocarcinoma: CT evaluation.
1Institut de Diagnòstic per la Imatge, Hospital Duran i Reynals, Ciutat Sanitària i Universitària de Bellvitge, Autovia de Castelldefels km 2,7. L'Hospitalet de Llobregat 08907, Barcelona, Spain.
Abdominal Imaging
|August 10, 2000
Summary
Computed tomography (CT) imaging of peripheral cholangiocarcinomas shows hypodensity and peripheral enhancement. Delayed imaging reveals hyperattenuation, suggesting this diagnosis in the right clinical context.
Area of Science:
- Radiology
- Oncology
- Hepatobiliary Surgery
Background:
- Peripheral cholangiocarcinoma is a challenging diagnosis.
- Accurate imaging is crucial for patient management.
Purpose of the Study:
- To evaluate computed tomography (CT) imaging features of peripheral cholangiocarcinomas.
- To correlate CT findings with histologic data.
Main Methods:
- Retrospective review of 25 peripheral cholangiocarcinomas in 24 patients.
- Analysis of incremental dynamic nonhelical and helical CT scans.
- Evaluation of arterial, portal venous, and delayed phase imaging.
Main Results:
- Tumor size ranged from 1.2 to 17 cm.
- Bile duct dilatation (52%) and regional lymph node enlargement (24%) were observed.
- Hypodense tumors with peripheral rim-like enhancement and delayed hyperattenuation were characteristic.
Conclusions:
- Hypodense hepatic lesions with peripheral enhancement, biliary dilatation, and delayed contrast enhancement suggest peripheral intrahepatic cholangiocarcinoma.
- CT imaging plays a vital role in diagnosing this malignancy.