Carcinoma de células renales vs oncocitoma renal reporte de caso: la importancia de la imagenología en la decisión terapéutica

Renal Cell Carcinoma vs. Renal Oncocytoma Case Report: The Importance of Imaging in Therapeutic Decision-Making

Abstract

With high frequency, renal masses are incidentally identified by imaging methods, many of these are renal cell carcinomas, the objective of imaging studies is to differentiate a benign mass from a renal cell carcinoma, up to 20% of the cases. Indeterminate solid renal masses finally turn out to be benign with a higher incidence of benignity in small renal masses (less than 4cm), however in some cases it is not possible to differentiate them; there are radiological signs that incline the diagnosis towards malignancy or benignity, and significantly affect the diagnosis, characterization, staging, orientation of treatment (partial and radical nephrectomy, biopsy and tumor ablation) as well as subsequent evaluation. Presentation of a case of a 74-year-old male patient, who came with abdominal pain in the left flank as the only symptomatology, where after clinical evaluation, complementary ultrasound is recommended in which the presence of a renal mass located in the pole is reported as an incidental finding. lower left kidney, with abundant Doppler flow uptake in its periphery, for which UROTC is suggested, as a complementary method for characterization, definitive image staging where, due to its behavior to contrast medium and absence of invasion to vascular and lymph node structures, raises the diagnosis of chromophobe renal carcinoma vs renal oncocytoma.