The two most common neoplasms of the pineal region (quadrigeminal plate cistern) are: germinoma (aka. seminoma, dysgerminoma); and, teratoma. Teratomas .\r \r \r \r \r \r Primary brain or CNS Lymphoma (PCNSL) is usually a non-Hodgkin B-cell neoplasm. PCNSL accounts for 2-3% of primary brain tumors. The lesions are .\r \r Roberto Heros.
