Portal cavernoma: dynamic CT features and transient differences in hepatic attenuation.

Area of Science:

• Radiology
• Hepatology
• Vascular Imaging

Background:

• Portal cavernoma is a vascular malformation of the liver.
• Understanding its imaging characteristics is crucial for diagnosis and management.

Purpose of the Study:

• To characterize the dynamic computed tomography (CT) findings in portal cavernomas.
• To correlate imaging findings with hemokinetic abnormalities.

Main Methods:

• Dynamic computed tomography (CT) was performed on sixteen patients with portal cavernomas.
• Sonography was used for confirmation.
• Analysis of vascular structure, collateral pathways, and contrast enhancement patterns.

Main Results:

• Characteristic findings included loss of normal vascular structure and enhanced sinuous collateral pathways during the portal phase.
• Fifteen patients showed transient hepatic attenuation differences and peripheral arterial contrast concentration.
• These abnormalities suggest increased arterial flow in poorly perfused liver territories.

Conclusions:

• Dynamic CT provides characteristic imaging features of portal cavernomas.
• Hemokinetic abnormalities observed are likely due to increased arterial flow in affected liver segments.