Coronal reformatted contrast-enhanced CT scan obtained during the excretory phase shows tumor involvement of the renal sinus and the extent of the renal cell carcinoma (arrows).

• 多房性囊性肾瘤，是良性的，多房状，囊性的肿瘤，起源于肾实质。好发于两个年龄阶段，少年男性，中年女性。