title: A pilocytic astrocytoma mimicking a clinoidal meningioma.
abstract: Pilocytic astrocytomas and meningiomas are benign, primary brain tumors that may involve the optic tract. Classically, the presence of a dural "tail" sign may differentiate a meningioma from other intracranial lesions. In this report, we describe a mass with the typical appearance of a clinoidal meningioma on magnetic resonance imaging (MRI) but postoperatively diagnosed as a pilocytic astrocytoma. This case illustrates the rare occurrence of a pilocytic astrocytoma mimicking a meningioma on MRI.
authors.affiliation: Department of Neurological Surgery, The Ohio State University Wexner Medical Center, 410 W. 10th Avenue, N1022 Doan Hall, Columbus, OH 43210, USA.
authors.forename: Christopher S
authors.initials: CS
authors.lastname: Hong
authors.affiliation: Department of Pathology, The Ohio State University Wexner Medical Center, 333 W. 10th Avenue, 4169 Graves Hall, Columbus, OH 43210, USA.
authors.forename: Norman L
authors.initials: NL
authors.lastname: Lehman
authors.affiliation: Department of Neurological Surgery, The Ohio State University Wexner Medical Center, 410 W. 10th Avenue, N1022 Doan Hall, Columbus, OH 43210, USA.
authors.forename: Eric
authors.initials: E
authors.lastname: Sauvageau
references.citation: Neurosurgery. 1994 Jan;34(1):68-78
references.pmid: 8121571
references.citation: Neurosurgery. 2012 Nov;71(5):951-61
references.pmid: 22843130
references.citation: Pediatr Neurosurg. 2012;48(4):253-7
references.pmid: 23548417
references.citation: J Pediatr. 1994 Jul;125(1):63-6
references.pmid: 8021787
references.citation: J Neurosurg. 2012 Oct;117(4):645-53
references.pmid: 22839654