Carcinoma de células renales y carcinoma urotelial de la pelvis renal sincrónicos e ipsilaterales: reporte de caso y revisión de la bibliografía.

BACKGROUND: Renal cell carcinoma (RCC) represents the seventh malignant neoplasm in patients under 75 years old and affects both sexes equally; however, its presence associated with Urothelial Carcinoma (UC) is not registered. Therefore the diagnosis of synchronous ipsilateral primary RCC y UC is considered extraordinary rare, with only 50 cases reported in the literature. CASE: The present study reports the case of a 76-year-old male with an initial clinical diagnosis of renal cell carcinoma, whose postoperative pathology showed synchronous ipsilateral urothelial carcinoma in the renal pelvis. CONCLUSIONS: Synchronous ipsilateral RCC and UC is extraordinarily rare, with only a few cases reported in the literature until now and causes many challenges for research; in the first place, the necessity to do a correct preoperatory diagnosis in order to achieve a better surgical management for the patient; the lack of consensus about the prognosis and survival; and finally, the possible risk factors involved in the simultaneous cancer development. [ABSTRACT FROM AUTHOR]