There is a 2.9 x 1.9 x 2.4 cm solid mass within the right inferior fourth ventricle extending through the right foramina of Luschka with distortion of the right medulla and partial effacement of the ventricle. Small foci of calcifications are present and the lesion enhances vividly.
There is mass effect and partial effacement of the inferior aspect of the fourth ventricle. No upstream ventricular dilation or evidence of transependymal CSF shift. No other abnormal enhancement is demonstrated.