The characterization of pancreatic and bile duct tumours by duplex Doppler.
Clin Radiol
; 45(3): 181-4, 1992 Mar.
Article
em En
| MEDLINE
| ID: mdl-1555370
ABSTRACT
Duplex Doppler imaging was used to study the effect of pancreatic and bile duct tumours on portal vein and hepatic artery blood flow and the specific Doppler signals recorded from these tumours. Chaotic portal vein flow occurred in 35% (14) of pancreatic and 20% (6) of biliary tumours and complete portal vein occlusion in 28% (11) and 10% (3) respectively. Twenty-eight per cent (11) of pancreatic and 7% (2) of bile duct tumours had high frequency shift Doppler signals and 22% (9) of pancreatic tumours had a signal indicating low impedence flow. Both signal types are suggestive of malignancy. The results suggest that pulsed Doppler imaging has a valuable place in the ultrasound assessment of portal vein wall invasion, is an important staging criterion for pancreatic and biliary tumours and may assist in differentiating benign from malignant lesions.
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Base de dados:
MEDLINE
Assunto principal:
Neoplasias Pancreáticas
/
Veia Porta
/
Neoplasias dos Ductos Biliares
/
Artéria Hepática
Tipo de estudo:
Diagnostic_studies
Limite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
1992
Tipo de documento:
Article