case_images: PMC5482168_01
case_images: MRI brain post-contrast showing a heterogeneously enhancing space occupying lesion in the lateral ventricles with extension into the foramen of Monro with obstructive hydrocephalus
case_images: SNI-8-116-g001.jpg
case_images: PMC5482168_01_SNI-8-116-g001.jpg
case_images: F1
case_images: T1-weighted postcontrast images, a heterogeneously enhancing mass lesion identified within the lateral ventricles in the proximity of the foramina of Monro [Figure 1].
case_images: MRI Brain T1 Weighted coronal images suggestive of a hyperintense lesion occupying the lateral ventricles and extending into the third ventricle. Hydrocephalus also evident
case_images: SNI-8-116-g002.jpg
case_images: PMC5482168_01_SNI-8-116-g002.jpg
case_images: F2
case_images: Major vessels showed normal flow voids and basal cisterns were preserved [Figure 2].
case_images: Alternating loose and compact areas characteristic of Pilocytic astrocytoma (x20)
case_images: SNI-8-116-g003.jpg
case_images: PMC5482168_01_SNI-8-116-g003.jpg
case_images: F3
case_images: Histopathology showed multiple fragments of a neoplastic lesion comprising spindle-to-stellate-shaped cells arranged in alternating compact and loose areas [Figure 3].
case_images: Abundant Rosenthal fibers in Pilocytic astrocytoma (x40)
case_images: SNI-8-116-g004.jpg
case_images: PMC5482168_01_SNI-8-116-g004.jpg
case_images: F4
case_images: There were associated thick walled, hyalinized blood vessels in the stroma along with areas exhibiting Rosenthal fibers and hyaline globules [Figure 4].
case_images: GFAP shows diffuse staining in pilocytic astrocytoma
case_images: SNI-8-116-g005.jpg
case_images: PMC5482168_01_SNI-8-116-g005.jpg
case_images: F5
case_images: Immunohistochemically, the tumor cells were diffusely positive for glial fibrillary acidic protein (GFAP) [Figure 5].