Choroid Plexus Tumors

Comprise 0.3% to 0.6% of brain tumors; 2% to 4% of pediatric brain tumors

Most common in children under the age of 15

Account for 10% to 20% manifesting before the first year of life

Lateral ventricular tumors arise in younger patients (<20 years)

Fourth ventricle tumors show no age predilection

May arise in lateral (50%), fourth (40%), or third (5%) ventricles

Obstructive symptoms such as headaches, dizziness, nausea

Infants with open cranial sutures may present with increased head circumference

Only rarely metastasize in CSF

Generally good prognosis

Treatment involves surgical resection

Well-circumscribed intraventricular mass on CT

Contrast enhancing on T1-weighted MRI; hyperintense on T2