title: Asteroid bodies and other cytoplasmic inclusions in necrobiotic xanthogranuloma with paraproteinemia.
abstract: BACKGROUND
  Necrobiotic xanthogranuloma (NXG) with paraproteinemia is a distinctive palisading granuloma of the skin. Extracutaneous lesions are rarely present.
  
  
  OBJECTIVE
  The purpose of this study was to confirm the presence and significance of giant cell asteroid bodies and other cytoplasmic inclusions in NXG with paraproteinemia.
  
  
  METHODS
  Skin biopsy specimens from 24 patients with NXG with paraproteinemia were reviewed; autopsy and lung biopsy specimens from two patients were stained for iron, calcium, and polysaccharide.
  
  
  RESULTS
  Giant cell asteroid bodies were observed in skin biopsy specimens of 8 (33%) of the 24 patients. In addition, large acidophilic polygonal cytoplasmic inclusions were observed in myocardial tissue of one of the autopsy cases. Iron and calcium were not found.
  
  
  CONCLUSIONS
  Asteroid bodies and other inclusions can be present in the giant cells of NXG with paraproteinemia. They are as frequent as, or more frequent than, in other granulomatous diseases and should be considered in the diagnosis of NXG with paraproteinemia.
authors.affiliation: Mayo Clinic Scottsdale, Ariz, USA.
authors.forename: R K
authors.initials: RK
authors.lastname: Winkelmann
authors.forename: P R
authors.initials: PR
authors.lastname: Dahl
authors.forename: C
authors.initials: C
authors.lastname: Perniciaro
authors.forename: P M
authors.initials: PM
authors.lastname: Dahl
mesh_terms: D015726:Giant Cells / Q000473:pathology; D006099:Granuloma / Q000150:complications / Q000473:pathology*; D006801:Humans; D002479:Inclusion Bodies / Q000473:pathology*; D009206:Myocardium / Q000473:pathology; D010265:Paraproteinemias / Q000150:complications*; D012867:Skin / Q000473:pathology*; D014973:Xanthomatosis / Q000150:complications / Q000473:pathology*