title: Poorly differentiated carcinoma arising from adenolymphoma of the parotid gland.
abstract: BACKGROUND
  There is only one previous case report of a poorly differentiated carcinoma arising from an adenolymphoma of the parotid gland (Warthin's tumour). The absence of clinical symptoms, and the aspecificity of the radiological pattern make the diagnosis very difficult.
  
  
  METHODS
  We here report the case of a 73-year-old man with Warthin's tumour who was brought to our attention because of a swelling in the parotid region.
  
  
  CONCLUSIONS
  In this case with an atypical clinical presentation, the intra-operative examination of a frozen section of the parotid mass allowed us to diagnose the malignant tumour correctly and consequently undertake its radical excision.
authors.affiliation: Pathology Unit, Azienda Ospedaliera S. Paolo and Ospedale Maggiore di Milano, University of Milan, Milan, Italy. stefano.ferrero@unimi.it
authors.forename: Stefano
authors.initials: S
authors.lastname: Ferrero
authors.forename: Laura
authors.initials: L
authors.lastname: Cattaneo
authors.forename: Andrea
authors.initials: A
authors.lastname: Peri
authors.forename: Paola
authors.initials: P
authors.lastname: Braidotti
authors.forename: Ugo
authors.initials: U
authors.lastname: Cioffi
authors.forename: Gabriele
authors.initials: G
authors.lastname: Scaramellini
authors.forename: Michele M
authors.initials: MM
authors.lastname: Ciulla
authors.forename: Matilde
authors.initials: M
authors.lastname: De Simone
authors.forename: Carmelo
authors.initials: C
authors.lastname: Arizzi
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Pignataro
mesh_terms: D000235:Adenolymphoma / Q000175:diagnosis / Q000473:pathology*; D000368:Aged; D006801:Humans; D008297:Male; D010307:Parotid Neoplasms / Q000175:diagnosis / Q000473:pathology*