부산대학교 도서관

To purchase or authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1177/1051228405001514 Byline: F Reis (1), AV Faria (1), VA Zanardi (1), JR Menezes (1), F Cendes (1), LS Queiroz (1) Keywords: Pineal tumors; teratoma; astrocytoma; pineoblastoma; pineocytoma; germinoma; ependymoma Abstract: ABSTRACT Background and Purpose. The authors report radiological findings in 11 tumors in the pineal region, which were histologically diagnosed as germinomas, pineocytomas pineoblastomas, ependymomas, teratomas, and astrocytomas. Methods. Computed tomography (CT) was performed in seven patients and magnetic resonance imaging (MRI) was performed in all patients. Results. CT showed a solid or solid/cystic mass with variable contrast enhancement. MRI showed a heterogeneous mass, with hypointense signal on T1 and iso/hyperintense signal on T2-weighted images (WI) and gadolinium enhancement. Extension to adjacent structures occurred in five patients and spread through the cerebral spinal fluid (CSF) in two. Conclusions. Pineal region tumors have no pathognomonic imaging pattern. MRI and CT are complementary in diagnosis and are important to determine localization, extension, and meningeal spread. Author Affiliation: (1)From the Department of Radiology (FR, AVF, VAZ, JRM); Neurology (FC); and Pathology, FCM, State University of Campinas - UNICAMP, Campinas, SP, Brazil (LSQ). Article History: Received March 7, 2005, and in revised form July 11, 2005. Accepted for publication July 28, 2005. Article note: Address correspondence to Fernando Cendes, MD, PhD, Departamento de Neurologia, FCM UNICAMP Cidade Universitaria, Campinas, SP, Brazil, 13083-970. E-mail: fcendes@unicamp.br.