An Incidental Finding of an Asymptomatic Renal Mass Clinical History A 48-year old man presented with left flank pain and overall discomfort. An ultrasound of the abdomen was requested to assess for left renal calculi that might explain the symptoms. Case Description Ultrasound revealed a 5 cm heterogeneous echogenic mass in the right kidney with some evidence of vascularity within it. Diagnosis/ Discussion/ Treatment/ Follow up A subsequent whole body CT scan confirmed the presence of the 5 cm mass arising from the midpole of the right kidney and showing heterogeneous contrast enhancement. The patient had a right nephrectomy. The histology analysis of the surgical samples confirmed the lesion to he renal cell carcinoma (RCC). Sonograms Right renal mass with callipers Right renal mass longitudinal view CDI right renal mass with some internal vascularity Normal left kidney Coronal CT showing the right renal mass Published on: November 25, 2024