title: [Pigmented renal carcinoma, rich in hemosiderin].
abstract: OBJECTIVE
  To report a case of hemosiderin-rich, pigmented renal cell carcinoma.
  
  
  METHODS
  A 70-year-old patient referred several episodes of gross hematuria during the last few weeks, without any other symptoms. CT demonstrated a renal mass compatible with carcinoma. A right renal nephrectomy was performed.
  
  
  RESULTS
  Anatomopathological analysis revealed a hemosiderin-rich, pigmented, papillary renal cell carcinoma localized to the renal capsule that stained blue with the iron staining method. The postoperative period was unremarkable and the patient is asymptomatic one year postoperatively.
  
  
  CONCLUSIONS
  Papillary renal cell carcinoma can present as a pigmented lesion due to the accumulation of iron in the cytoplasm. This peculiar form must be distinguished from neuromelanin-pigmented lesions.
authors.affiliation: F.E.A. en Anatomía Patológica, Hospital de la Merced, Osuna, Sevilla, España. mediosun@arrakis.es
authors.forename: M
authors.initials: M
authors.lastname: Medina Pérez
authors.forename: J A
authors.initials: JA
authors.lastname: Valero Puerta
authors.forename: I
authors.initials: I
authors.lastname: Valpuesta Fernández
authors.forename: D
authors.initials: D
authors.lastname: Pérez Martín
mesh_terms: D000231:Adenocarcinoma, Papillary / Q000737:chemistry* / Q000473:pathology*; D000368:Aged; D006485:Hemosiderin / Q000032:analysis*; D006801:Humans; D007680:Kidney Neoplasms / Q000737:chemistry* / Q000473:pathology*; D008297:Male
chemical_list: D006485:Hemosiderin