Sarcomatoid renal carcinoma
Gómez Vegas, A.; Blázquez Izquierdo, J.; Blanco González, J.; Corral Rosillo, J.; Silmí Moyano, A.; Resel Estévez, L.
Archivos Espanoles de Urologia 51(2): 154-158
1998
ISSN/ISBN: 0004-0614 PMID: 9586313 Document Number: 495282
To analyze the pathological and clinical features of a variant of renal carcinoma: sarcomatoid renal carcinoma. Of 316 patients diagnosed as having a renal tumor from 1975 to 1995, 11 (3.5%) with a pathological diagnosis of sarcomatoid renal carcinoma were analyzed. The clinical history, biological data and diagnostic imaging findings of these patients were reviewed. All patients had undergone surgical exploration. All the tumors showed a double cellular population, with a fusiform component. Histological analysis showed a high grade and stage tumor. Ten patients died from the disease, the mean survival rate was 9 months (range 2-48) following diagnosis. Sarcomatoid carcinoma of the kidney is uncommon and can be occasionally difficult to distinguish from sarcoma. It has a worse prognosis than other variants of renal carcinoma.