Here, the tumor extended up the vena cava and occluded the adrenal vein, leading to hemorrhagic adrenal infarction in the adrenal at the top of the specimen.

• 肿瘤蔓延至腔静脉，压迫肾上腺静脉，导致了标本上方的肾上腺出血性梗死。肾细胞癌可以浸润穿过肾包膜。