MRI of adenomatous hyperplastic nodules of the liver in Budd-Chiari syndrome.

We present two cases of adenomatous hyperplastic nodules (AHN) occurring in patients with chronic Budd-Chiari syndrome who were investigated with MRI. In one case the foci of AHN were isointense to the liver on spin echo (SE) T1-weighted MRI and were hyperintense on both SE proton density and SE T2-weighted MRI. In the other case the nodules were hyper-intense on SE T1-weighted MRI. They were isointense on SE proton density-weighted MRI and became slightly hyperintense on SE T2-weighted MRI. Furthermore, in both cases one nodule displayed hyperintensity with hypointense rims on SE T2-weighted MRI.