Fig. 1From: Retrograde venous invasion in renal cell carcinoma: a gross diagnosis Case 1. A 47-year-old male patient with clear cell carcinoma. One year before, he removed the contralateral kidney due to a clear cell carcinoma (two independent foci). White small nodules are distributed along the corticomedullar junction in the upper lobe. Invasion of major renal vein is evident in (B and C)Back to article page