title: Cytology of pigmented renal cell carcinoma. A case report.
abstract: BACKGROUND
  Pigmented renal cell carcinoma is very rare, and there have been no reports on its cytologic findings.
  
  
  METHODS
  A 40-year-old female with pigmented renal cell carcinoma had cytologic findings similar to those of clear cell carcinoma except for the presence of melaninlike brown pigment.
  
  
  CONCLUSIONS
  It is important to recognize that renal cell carcinoma may contain melaninlike brown pigment seen on cytologic examination of renal aspirates.
authors.affiliation: Department of Pathology, Kawasaki Medical School, Kurashiki, Japan. hirokawa@med.kawasaki-m.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Hirokawa
authors.forename: T
authors.initials: T
authors.lastname: Sakurai
authors.forename: M
authors.initials: M
authors.lastname: Shimizu
authors.forename: T
authors.initials: T
authors.lastname: Manabe
authors.forename: T
authors.initials: T
authors.lastname: Kanahara
mesh_terms: D000328:Adult; D002292:Carcinoma, Renal Cell / Q000737:chemistry / Q000150:complications / Q000473:pathology*; D003594:Cytoplasmic Granules / Q000737:chemistry; D005260:Female; D006417:Hematuria / Q000209:etiology; D006801:Humans; D007680:Kidney Neoplasms / Q000737:chemistry / Q000150:complications / Q000473:pathology*; D008543:Melanins / Q000032:analysis*; D014411:Neoplastic Stem Cells / Q000737:chemistry / Q000648:ultrastructure; D010858:Pigmentation
chemical_list: D008543:Melanins