Tumor Invasion of the Portal Vein May Be Observed in Association

question 3

Multiple Choice

Tumor invasion of the portal vein may be observed in association with cancerous lesions of the liver or with metastases. Color Doppler scanning demonstrates tumor vascularity within the portal vein lesion by the presentation of: high resistance venous signals.

• A) low resistance venous signals
• B) low resistance arterial signals
• C) high resistance venous signals
• D) high resistance arterial signals.

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