Türk Nöroşirürji Dergisi 2013 , Vol 23 , Num 1
Recurrent Tumor of the Pineal Region: A Case Report
Mihriban GÜRBÜZEL1, Selma ERDOĞAN DÜZCÜ1, Cengiz ACAR2
1Haseki Eğitim ve Araştırma Hastanesi, Patoloji Bölümü, İstanbul, Türkiye
2Haseki Eğitim ve Araştırma Hastanesi, Beyin Cerrahisi Kliniği, İstanbul, Türkiye
Primer pineal gland malignancies are uncommon and seldom have papillary architecture. Papillary tumor of the pineal region is a recently described neoplasm that the biological behavior of PTPR is variable and may correspond to WHO grade II-III. Histological examination found a distinctive papillary growth pattern in which the vessels were covered by multiple layers of tumor cells. Primary tumors of the pineal region with papillary features include papillary pineal parenchymal tumors (i.e. pineocytoma and pineoblastoma), papillary ependymoma, choroid plexus papilloma, papillary meningioma and germ cell tumors. Histologic features and immunohistochemical staining distinguish this type of papillary tumor from other papillary like tumors that occur in this region. Our aim on this article is to report a rarerly seen case of papillary tumor of the pineal region. Anahtar Kelimeler : Pineal gland tumor, Histopathology, Immunohıstochemistry