Match the following classic multiphasic contrast-enhanced imaging (CT or MRI) findings of the liver with their most likely corresponding hepatic lesion.
- A well-circumscribed liver mass exhibiting intense hyperenhancement during the late arterial phase, followed by rapid contrast washout during the portal venous and delayed phases, along with a persistently enhancing peripheral pseudocapsule.Hepatocellular carcinoma
- A well-defined hypodense hepatic lesion on non-contrast imaging that demonstrates peripheral, nodular, and discontinuous enhancement during the arterial phase, progressing to complete, uniform, centripetal contrast fill-in on delayed images.Cavernous hemangioma
- A highly vascular liver lesion demonstrating prominent and uniform arterial phase hyperenhancement with a central hypodense region that progressively accumulates contrast, becoming hyperdense relative to the surrounding lesion on delayed imaging.Focal nodular hyperplasia
- A solitary, well-demarcated heterogeneous hepatic mass showing moderate arterial enhancement without a central scar, often containing macroscopic fat or areas of acute intratumoral hemorrhage.Hepatocellular adenoma
Answer
The correct pairings match Hepatocellular carcinoma with arterial hyperenhancement and venous washout; Cavernous hemangioma with peripheral nodular centripetal fill-in; Focal nodular hyperplasia with intense arterial enhancement and a delayed-enhancing central scar; and Hepatocellular adenoma with heterogeneous arterial enhancement lacking a central scar.
Each primary hepatic lesion demonstrates a unique and predictable hemodynamic behavior on multiphasic contrast-enhanced CT or MRI that directly correlates with its underlying histological architecture.
Step-by-Step Solution
Key Concept
Radiographic differentiation of primary hepatic lesions using multiphasic contrast-enhanced imaging.