RT Journal Article SR Electronic T1 Middle Ear Adenoma: A Challenging Diagnosis JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1534 A1 E. Zan A1 C.J. Limb A1 J.F. Koehler A1 D.M. Yousem YR 2009 UL http://www.ajnr.org/content/early/2009/04/15/ajnr.A1534.abstract AB