[Pigmented renal carcinoma, rich in hemosiderin].
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.
Medina Pérez
M
M
F.E.A. en Anatomía Patológica, Hospital de la Merced, Osuna, Sevilla, España. mediosun@arrakis.es
Valero Puerta
J A
JA
Valpuesta Fernández
I
I
Pérez Martín
D
D
D000231:Adenocarcinoma, Papillary / Q000737:chemistry* / Q000473:pathology*; D000368:Aged; D006485:Hemosiderin / Q000032:analysis*; D006801:Humans; D007680:Kidney Neoplasms / Q000737:chemistry* / Q000473:pathology*; D008297:Male
D006485:Hemosiderin