Haemangiomas are the most common benign tumour of the liver. More common in females. The prevalence in general population ranges from 2% to 20%.

The cause of Haemangiomas is unclear. It is consisting of blood-filled vascular cavities lined by endothelial cells.

Haemangiomas are often incidentally discovered during imaging and most patients are asymptomatic and require no treatment. Large Haemangiomas may cause symptoms secondary to extrinsic compression of adjacent organs.

MR Imaging features of typical Cavernous Haemangioma:

T1: homogenous hypointense
T2: homogenous markedly hyperintense(referred to as light bulb sign)
Post contrast: enhancement features depend on the size of the lesion, homogeneous arterial phase enhancement (<1.5 cm) or interrupted peripheral nodular enhancement (>1.5 cm) with centripetal progression to uniform enhancement
Hepatobiliary phase: hypointense.
DWI: hyper intense with low b values (T2 shine through). Iso-intesne with high b vaule and on ADC map.