title: Sinonasal hemangiopericytoma in the columellar base, an unusual location.
authors: Department of Otorhinolaryngology, Head & Neck Surgery, Luzerner Kantonsspital, Lucerne, Switzerland. alainpfammatter@hotmail.com
authors: Alain
authors: A
authors: Pfammatter
authors: Peter
authors: P
authors: Brändle
authors: Sandra
authors: S
authors: Hürlimann
authors: Christoph
authors: C
authors: Schlegel-Wagner
mesh_terms: D003937:Diagnosis, Differential; D005260:Female; D006393:Hemangiopericytoma / Q000473:pathology* / Q000601:surgery; D006801:Humans; D008279:Magnetic Resonance Imaging; D008875:Middle Aged; D010255:Paranasal Sinus Neoplasms / Q000473:pathology* / Q000601:surgery