MRI
Axial T1 fat sat
Axial SSFP
Axial T1 C+ fat sat
The mass is centred in the atrioventricular groove. It is well circumscribed, demonstrating T1 hyperintensity with internal cystic components, with avid contrast enhancement.
Based on CT and MRI, the initial differential diagnosis consisted of paraganglioma and hemangioma.