title: [Hemangiopericytoma from external auditory canal and middle ear: one case report].
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Nanjing General Hospital of Nanjing Military Command, Nanjing 210002, China.
authors.forename: M H
authors.initials: MH
authors.lastname: Wu
authors.affiliation: Department of Pathology, Nanjing General Hospital of Nanjing Military Command, Nanjing 210002, China.
authors.forename: N
authors.initials: N
authors.lastname: Wu
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Nanjing General Hospital of Nanjing Military Command, Nanjing 210002, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Cheng