[Renal plasmacytoma. Report of a new case].
OBJECTIVE
To present a case of extramedullary plasmacytoma localized in the kidney. The clinical features, diagnostic tests, treatment and outcome are discussed.


RESULTS
A 59-year-old patient presented with a right renal mass and renal failure. The complementary tests showed a lambda monoclonal band in blood and urine, and a left renal biopsy showed changes compatible with myeloma. The definitive diagnosis of plasmacytoma was based on the findings of open renal biopsy since fine needle punction findings were compatible with a carcinoma. The patient received polychemotherapy, but died one year after the diagnosis due to a rapidly progressing plasmatic cell dyscrasia.


CONCLUSIONS
Renal plasmacytoma is rare and should be suspected when paraprotein is detected in blood and urine, and when the patient has a history of plasmatic cell dyscrasia. There is no widely-established treatment. Surgery, radiotherapy or chemotherapy, alone or in combination, can be utilized.
Tejido Sánchez
A
A
Servicio de Urología, Hospital Universitario 12 de Octubre, Madrid, España.
Hernández Martínez
E
E
Ortíz
M C
MC
García de la Torre
J P
JP
Pamplona Casamayor
M
M
de la Rosa Kherman
F
F
Leiva Galvis
O
O
D006801:Humans; D007680:Kidney Neoplasms / Q000175:diagnosis*; D008297:Male; D008875:Middle Aged; D010954:Plasmacytoma / Q000175:diagnosis*