A 63-year-old man with abdominal pain. (A-C) MR images revealed a mass with low signal intensity on T1-weighted imaging and high signal intensity on T2-weighted imaging. (D-F) The periphery of the mass was slightly enhanced during the arterial, portal or delayed phase of contrast enhancement. (G) On CT, a heterogeneous hypodense mass was revealed. (H-L) After contrast material injection, the mass showed gradual, inhomogeneous enhancement, with decreased enhancement on delayed scans.