A choroid plexus papilloma is a rare CNS neoplasm arising from the neuroepithelial lining of the choroid plexus. A third ventricular location of a choroid plexus papilloma is rare compared with the more common sites in the lateral and fourth ventricles. Cystic choroid plexus papilloma represents an infrequent subtype that may present diagnostic ambiguity. The authors present a case of cystic choroid plexus papilloma within a cavum septum pellucidum that radiographically mimicked neurocysticercosis.
Address correspondence to: Stephen P. Kalhorn, M.D., Department of Neurosurgery, NYU Langone Medical Center, 462 First Avenue, Bellevue Hospital, Room 7S4, New York, New York 10016. email: