MRI Brain; Ax T2W (left), and Ax PD (right): Hyperintense lesion
in the region of the pineal gland and quadrigeminal cistern.
MRI Brain; Cor T1W without (left top) and with Gd (left bottom), Ax T1W Post-Gd
(right top), and Sag T1W Post-Gd (right bottom): The lesion is T1W hypointense
and does not enhance. It compresses the adjacent tectum and vermis.
Key words: mri tumor neoplasia pineal region
Arachnoid cyst of the