Figure 1

MRI showed a solid cystic lesion in the right CPA that compressed both the brain stem and the cerebellum. The anterior portion of the lesion was solid and showed signs of cystic changes, and the posterior portion of the lesion was cystic. The size of the solid component was about 2.2 cm × 2.2 cm × 2.3 cm. The solid component showed hyper- and isointensity on T1WI images (A) and mixed intensity on T2WI images (B), and it was significantly enhanced after contrast administration (C).