Presentation
Gross hematuria, flank pain, and palpable flank mass.
Patient Data
Age: Adult
Gender: Male
From the case:
Renal cell carcinoma with renal vein thrombosis
Axial non-contrast

Non-contrasted CT Abdomen reveals an enlarged left kidney with irregular margins and left perinephric fat stranding. There is also fusiform dilatation of the left renal vein suspicious of venous thrombosis. High attenuated deposits in the urinary bladder are likely in keeping with blood product.
Case Discussion
CT features are suggestive of renal cell carcinoma or Hypernephroma. Gross hematuria, flank pain, and palpable flank mass are the classical triad.
Renal vein thrombosis: opacified periureteral and perinephric ("cobwebs") collaterals, renal vein attenuation and enlargement.