Fig. 2

a, b, c. Chronological changes seen on MRCP. a: At the first examination. The tumor was observed as multiple cystic lesions. b: At 21 months after first examination. c: At 28 months after first examination. Figure 2-d, e, f, g. MRI appearance at 28 months after first examination. d: T1WI. A multi-cystic lesion with low intensity was surrounded by a mass with iso-intensity. e: T2WI. A multi-cystic lesion displays low- to iso-intensity. The surrounding tissue shows iso- to high intensity. f: T2-FAT-SAT. A multi-cystic high intensity lesion is shown. The surrounding tissue shows complete fat suppression. g: T2WI (coronal image). A ringed multi-cystic lesion with high intensity is surrounded by a smooth superficial mass. A small nodule is seen inside of the cyst ring