Pediatric Brain Tumors

DR: ABD ALLAH NAZEER. MD.

Juvenile pilocytic astrocytoma (JPA).

Intra-ventricular ependymoma

Bilateral acoustic neuroma of NF type 11

Bilateral acoustic neuroma of NF type 11

Epidermoid cysts, also known as "pearly tumors” because of their bright white appearance at intra-operative resection, developed from epithelial inclusions in basal cisterns, diploe of the skull and, very rarely in the intrinsic brainstem or pineal region, during neural tube closure or formation of secondary cerebral vesicles. They are not really tumors, their growth is due to the continuous formation of the keratohyalin from continued desquamation by theepithelium tissue. Their growth is very slow, so the onset of their clinical manifestations is variable between 20 and40 years in most of the cases.

CP angle epidermoid cysts

Cerebellopontine angle epidermoid cyst.

Cerebral Pilocytic Astrocytoma with Spontaneous intracranial Hemorrhage

Supratentorial ependymoma in a 10-year-old girl on a noncontrast CT, b T2-weighted, c FLAIR, and d–f postgadolinium T1-weighted MRI. Unlike posterior fossa ependymomas, most supratentorial ependymomas (70%) are extraventricular in origin.

Supra-tentorial grade 2 ependymoma in a 12-year-old girl. a Axial FLAIR, b axial perfusion MRI, c post-contrast axial T1, d axial cerebral blood volume map derived from perfusion MRI, e axial ADC coefficient, and f perfusion MRI T2*-weighted dynamic susceptibility .