RT Journal Article SR Electronic T1 Choroid Plexus Papilloma with Osseous Metaplasia as a Differential Diagnosis of Calcifying Pseudoneoplasms of the Neuraxis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology SP E51 OP E52 DO 10.3174/ajnr.A2096 VO 31 IS 6 A1 D.B. Pereira A1 E.L. Gasparetto A1 J. Marcondes de Souza A1 L. Chimelli YR 2010 UL http://www.ajnr.org/content/31/6/E51.abstract AB