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Lobulated margination of liver hemangiomas: Is this a definitive feature?
António P Matos1, Yong Hwan Jeon2, Miguel Ramalho1
1Department of Radiology, University of North Carolina at Chapel Hill, NC, USA; Department of Radiology, Hospital Garcia de Orta, Almada, Portugal.
Purpose:
To evaluate the occurrence rate of lobulated margination of hepatic hemangiomas.
Methods:
The study population included 585 hemangiomas in 261 patients (161 females; mean age: 51.9years). Two readers independently reviewed all cases.
Results:
Hemangiomas with lobulated margins accounted for 74.7% of all lesions. The incidence of lobulated margins was significantly higher (P<.001) in medium- and large-sized hemangiomas (77.6% and 99.5%, respectively). The majority of hemangiomas with type-3 enhancement showed lobulated margins (83.5%) (P<.001).
Conclusion:
Virtually, all hemangiomas>18mm show lobulated margins. The majority of hemangiomas with type-3 enhancement show lobulated margins. Lack of lobulated margins in larger lesions lowers the likelihood ratio for being hemangiomas.
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