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Neuroimaging in Pineal Tumors

Authors

  • F Reis MD,

    1. From the Department of Radiology (FR, AVF, VAZ, JRM); Neurology (FC); and Pathology, FCM, State University of Campinas – UNICAMP, Campinas, SP, Brazil (LSQ).
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  • AV Faria MD, PhD,

    1. From the Department of Radiology (FR, AVF, VAZ, JRM); Neurology (FC); and Pathology, FCM, State University of Campinas – UNICAMP, Campinas, SP, Brazil (LSQ).
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  • VA Zanardi MD, PhD,

    1. From the Department of Radiology (FR, AVF, VAZ, JRM); Neurology (FC); and Pathology, FCM, State University of Campinas – UNICAMP, Campinas, SP, Brazil (LSQ).
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  • JR Menezes MD,

    1. From the Department of Radiology (FR, AVF, VAZ, JRM); Neurology (FC); and Pathology, FCM, State University of Campinas – UNICAMP, Campinas, SP, Brazil (LSQ).
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  • F Cendes MD, PhD,

    1. From the Department of Radiology (FR, AVF, VAZ, JRM); Neurology (FC); and Pathology, FCM, State University of Campinas – UNICAMP, Campinas, SP, Brazil (LSQ).
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  • LS Queiroz MD, PhD

    1. From the Department of Radiology (FR, AVF, VAZ, JRM); Neurology (FC); and Pathology, FCM, State University of Campinas – UNICAMP, Campinas, SP, Brazil (LSQ).
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Address correspondence to Fernando Cendes, MD, PhD, Departamento de Neurologia, FCM UNICAMP Cidade Universitária, Campinas, SP, Brazil, 13083-970. E-mail: fcendes@unicamp.br.

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.

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