Tumor carcinoide renal primario

We describe the case of a man with a large right renal mass associated to a retroperitoneal lymph-node conglomerate. Increased urine concentrations of 5-hydroxy-indole-acetic acid and the histologic findings led to the diagnosis of primary renal carcinoid tumor. We review the epidemiology, clinical presentation, and findings at ultrasonography, computed tomography, and magnetic resonance image for primary renal carcinoid tumors.