title: Isolated AA Amyloidosis of the Radial Nerve.
abstract: Amyloidosis affecting peripheral nerve is usually seen in primary amyloidosis.
  
  
  
  We are reporting on the case of a 74-year-old man with a 16-month history of progressive left radial nerve paralysis. Perioperative imaging detected an enlarged radial nerve in the middle-distal part of the arm. The patient had an antecedent of amyloid deposits in the lung.
  
  
  
  A radial nerve amyloidosis was suspected and confirmed with a biopsy assisted by ultrasonography, resulting in a secondary amyloidosis form.
  
  
  
  Isolated radial nerve palsy due to nerve damage by amyloidosis has been reported before, but not in AA or secondary amyloidosis.
authors.affiliation: 1 Hospital Universitario de la Zarzuela, Madrid, Spain.|2 Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Teresa
authors.initials: T
authors.lastname: Pérez-de la Fuente
authors.affiliation: 1 Hospital Universitario de la Zarzuela, Madrid, Spain.|3 Fundación Jiménez Díaz, Madrid, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Fernández-Jara
authors.affiliation: 1 Hospital Universitario de la Zarzuela, Madrid, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: Rodríguez-Urcelay
authors.affiliation: 1 Hospital Universitario de la Zarzuela, Madrid, Spain.|2 Hospital Universitario de la Princesa, Madrid, Spain.
authors.forename: Jose
authors.initials: J
authors.lastname: Jiménez-Heffernan
authors.affiliation: 1 Hospital Universitario de la Zarzuela, Madrid, Spain.
authors.forename: Ángel
authors.initials: Á
authors.lastname: Juárez
mesh_terms: D000368:Aged; D000686:Amyloidosis / Q000175:diagnosis*; D001706:Biopsy; D006801:Humans; D008297:Male; D011826:Radial Nerve / Q000000981:diagnostic imaging / Q000473:pathology*; D020425:Radial Neuropathy / Q000209:etiology*
keywords: AA amyloidosis; nerve; palsy; radial; secondary