Magnetic resonance imaging of the brain (transverse view) of the patient showing two right intraventricular and one left intraventricular cystic lesions at varying stages. There is a larger 2.3-cm lesion in the posterior aspect of the right ventricle, which follows fluid signal on all sequences. There is subtle mass effect of the right ventricle, which appears asymmetrically enlarged compared with the left ventricle. There is no obstructing lesion in the region of the foramen of Monro or third ventricle. No parenchymal lesions were identified.