CT
A heterogeneously enhancing mass lesion, measuring 4.2 x 4.1 cm is seen at the upper pole of the left kidney (the left kidney was reported normal on the previous CT scan; however, retrospectively, there was a lesion at its upper pole which has now progressed in size). Renal vessels and IVC are patent and well opacified. Post-surgical changes are noted at the upper pole of the right kidney; however, no suspicious lesion is seen in the right kidney. Mildly hyperdense sludge and a few tiny radiopaque calculi are noted in the gallbladder.
Impression: Heterogeneously enhancing left renal mass lesion, suspicious of renal cell carcinoma.