title: An unusual presentation of oropharyngeal mucosal plasmacytosis related to toothpaste.
abstract: OBJECTIVE
  We present the case of a 59-year-old Chinese patient with an unusual presentation of mucosal plasmacytosis involving the oropharynx, related to the use of toothpaste.
  
  
  METHODS
  Case presentation and review of English medical literature involving mucosal plasmacytosis.
  
  
  RESULTS
  Mucosal plasmacytosis is an uncommon disease process and has been associated with hypersensitivity reactions. Most cases involve the gingival mucosa, although there have been reports of cases involving other oral mucosal sites and the upper aerodigestive tract. Our case provides an example of oropharyngeal plasmacytosis related to toothpaste. A resolution of signs and symptoms followed withdrawal of the suspected allergens.
  
  
  CONCLUSIONS
  Mucosal plasmacytosis is a benign inflammatory process that may appear to be more sinister on clinical examination. Skin patch testing is a useful adjunct in confirming the diagnosis.
authors: Department of Oral Diagnostic and Surgical Sciences, School of Dentistry, University of Otago, Dunedin, New Zealand. darryl.tong@stonebow.otago.ac.nz
authors: D C
authors: DC
authors: Tong
authors: M R
authors: MR
authors: Leaper
authors: A N
authors: AN
authors: Colquhoun
authors: A M
authors: AM
authors: Rich
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D006967:Hypersensitivity / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D009061:Mouth Mucosa / Q000473:pathology; D009092:Mucous Membrane / Q000473:pathology; D009959:Oropharyngeal Neoplasms / Q000209:etiology / Q000473:pathology*; D010954:Plasmacytoma / Q000209:etiology / Q000473:pathology*; D014100:Toothpastes / Q000009:adverse effects*
chemical_list: D014100:Toothpastes